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[ "Over 99% of the exocrine pancreas cells produce digestive juices", "They secrete digestive juice 'externally' into the small intestine", "There are enzymes for breaking down fats, proteins , and carbohydrates", "Digestive juices flows from the pancreas through an excretory duct into the small intestine", "When the blood sugar levels rise, as they might after a meal, insulin is released", "When blood sugar levels are too low, the pancreas releases glucagon into the bloodstream", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A conducting metal, like copper, is wrapped around a piece of metal", "An electrical source, like a battery, produces an electrical current", "The electrical current flows through the wire", "The electrical current creates a magnetic field around the wire, magnetizing the metal", "The magnetic field can be turned on and off by starting or stopping the electricity source", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Grass and small plants grow in an area", "These plants die", "The soil gains organic material", "The soil becomes more fertile", "Larger plants are able to be supported", "Trees eventually grow." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water seeps into rocks", "The water freezes and thaws", "Cracks form in the rocks", "Cracks also form when rocks heat up", "The rocks slowly break down." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water from the surface seeps below the soil", "The water comes into contact with the rock below", "The rock over the years carves through the rock", "The space in the rock becomes larger and forms into a cave", "As more rather rushes through the cave becomes a cavern." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Ocean waves hit land", "Ocean water pulls sand off of beaches", "Ocean water breaks rocks off of cliffs", "Ocean water carries sand and rocks into the ocean", "Sand and rocks go to other land or the bottom of the ocean." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A bird picks a spot high spot, often in a tree", "The bird collects bits of sticks and grass", "The sticks and grasses are placed between support branches", "Leaves, mud and spider webs are added to the sticks", "The mud, leaves and webs glue the sticks together", "The solid nest supports the eggs", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Coal is mined out of the ground", "Coal is pulverized into fine powder", "The coal is mixed with hot air", "The coal and hot air are blown into a boiler", "The coal and hot air burn over a fire", "Highly purified water is pumped through pipes in the boiler", "The water turns into steam", "The steam presses against turbines", "The turbines spin", "Electricity is produced." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Rock begins as magma from a volcano", "The magma cools", "Crystals form and the magma become igneous rocks", "The igneous rocks break down into sediment", "Become sedimentary rocks", "If subjected to heat and/or pressure from plate-tectonic activity the sedimentary rocks become metamorphic rock", "The metamorphic rocks melt", "Become magma again." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Warm weather causes water to evaporate", "The water rises up in the air", "It starts to cools down", "The water starts to condense", "It forms into clouds", "When there is enough moisture in the clouds it starts to rain." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Batteries are put in a flashlight", "The flashlight is turned on", "Two contact strips touch one another", "A circuit is completed between the batteries and the lamp", "The lamp in the flashlight begins to glow", "The reflector in the flashlight directs the lamp's beam", "A straight beam of light is generated", "The flashlight is turned off", "The circuit is broken", "The beam is no longer visible." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The thermostat senses that the temperature has dropped", "A signal is sent to the heating system", "Heating oil travels from the tank to the burner", "The oil becomes a fine mist mixed with air", "The oil/air combination is injected into the burner", "The burner is ignited in the combustion chamber", "The furnace heats the air", "The blower sends the heated air through the ducts", "The heated air comes out the vents and into the room." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "People breathe and expel carbon dioxide", "Engines produce carbon dioxide", "Living things produce waste", "Waste decomposes", "Decomposition produces methane", "Water evaporates", "Water vapor joins the atmosphere", "Carbon dioxide, water vapor and methane are greenhouse gases", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Two birds meet each other", "Egg is produced after fertilziation", "Mother sits on egg until it hatches", "Bird Hatches", "Grows up", "Flee the next", "Starts family", "Dies." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Solution caves are formed in limestone and similar rocks by the action of water", "After a rain, water seeps into cracks and pores of soil and rock", "The water percolates beneath the land surface", "Some of the water reaches a zone where all the cracks and pores in the rock are already filled with water", "Rainwater absorbs some carbon dioxide as it passes through the atmosphere and even more as it drains through soil and decaying vegetation", "The water combines chemically with the carbon dioxide", "A weak carbonic acid solution is formed", "This acid slowly dissolves calcite, forms solution cavities, and excavates passageways", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water comes into contact with something made of iron", "The water combines with carbon dioxide in the air to form carbonic acid", "As the acid is formed, the iron starts to dissolve", "Some of the water breaks down into hydrogen and oxygen", "The free oxygen and dissolved iron bond together", "They form iron oxide, which is rust", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Wind and water erode rocks", "The wind and water pick up sediment that came off the rocks", "Sediment is carried to an area by the wind, water, air, or ice", "Sediment is deposited on the same spot many times", "The sediment piles on top of other sediment for a long time", "The sediment near the bottom is compressed by the weight of newer sediment", "The sediment becomes sedimentary rock as it is pushed together by the heavy weight", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Acid rain is produced by chemicals that reach into the atmosphere", "Falls onto the ground", "The acid rain starts scouring rocks", "Destroys vegetation", "The lack of vegetation alters the surrounding environment." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The nuclei of some atoms have too few or too many neutrons", "The atoms become unstable", "The atoms split", "In alpha decay, two protons and two neutrons are released from the atom", "In beta decay, a neutron changes into a proton and an electron", "The proton joins the nucleus of the atom", "The electron is released", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Warm weather causes water to evaporate", "The water rises up in the air", "It starts to cools down", "The water starts to condense", "It forms into clouds", "When there is enough moisture in the clouds it starts to rain." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Animals eat a lot during good (warm, clear) weather", "Animals gain weight", "The season changes to one with bad (cold, snowy) weather", "Animals find a place to hibernate", "Animals enter a type of 'sleep' (hibernation)", "Body processes slow down", "The animal's heart rate and breathing rate slow", "The animal loses weight more slowly than usual", "The animal is able to survive not eating or drinking without hurting itself", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "There are places inside Earth where rock will melt", "Melted rock inside the Earth is also called molten rock, or magma", "Magma moves up through Earth's crust, but it does not always reach the surface", "When magma erupts onto Earth's surface, it is known as lava", "As lava flows from volcanoes it starts to cool", "Minerals form when magma and lava cool", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A bird lays an egg", "The egg hatches into a baby bird", "Baby bird eats", "Grows into an adult bird", "The bird finds a mate", "The pair build a nest", "The birds lay eggs." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Fuel mixes with air", "Mix gets inducted into cylinder", "Piston compresses the mix", "Spark plug emits a spark that ignites it causing combustion", "Combustion gases expand", "Pushes piston during power stroke", "Exhaust valve opens to vent exhaust out tail pipe." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water is heated", "The heated water evaporates", "The salt is left behind", "The evaporated water condenses on a cold surface", "The evaporated water is collected", "The process is repeated", "More salt is removed from the water." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A bird lays eggs in a nest", "The parent(s) incubate the eggs", "The eggs hatch", "The mother (and sometimes the father) bird take care of the baby birds", "The baby birds grow up and get their flight feathers", "The young birds learn to fly and leave the nest", "The adult birds find mates and mate." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A larva is born", "The caterpillar eats constantly until it grows bigger", "The caterpillar starts to form a cocoon around itself", "The caterpillar becomes a pupa", "After some time the cocoon hatches", "And a butterfly is born." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Carbon dioxide enters the leaves through the stomates by diffusion", "Water is transported to the leaves in the xylem", "Energy harvested through light reaction is stored by forming ATP", "Carbon dioxide and energy from ATP are used to create sugar", "Oxygen exits the leaves through the stomata by diffusion", "The plant reuses the water or the water exits through the stomata as water vapor." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Cells obtain glucose and oxygen", "The glucose and oxygen create carbon dioxide", "The cells release energy", "The cells don't have enough oxygen to repeat this", "The cells obtain more oxygen from the air", "The cells repeat this process." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Coal is burned in a boiler", "Steam is produced under pressure", "Flows into a turbine", "The turbine spins", "Creates electricity." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Rock begins as magma from a volcano", "The magma cools", "Crystals form and the magma become igneous rocks", "The igneous rocks break down into sediment", "Become sedimentary rocks", "If subjected to heat and/or pressure from plate-tectonic activity the sedimentary rocks become metamorphic rock", "The metamorphic rocks melt", "Become magma again." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Place the water in a pot", "Cover the pot with a slightly too large cover", "Place a larger pot under the first", "Heat water to evaporation", "Water vapor will collect on the lid", "Drip into the second pot as fresh water", "Salt is left behind in the original pot." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Carbon dioxide from the air passes through small pores (holes) in the leaves", "These pores are called stomata", "Water is absorbed by the roots", "It passes through vessels in the stem on its way to the leaves", "Sunlight is absorbed by a green chemical in the leaves." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Mix flour, baking powder, sugar, and salt into a bowl", "Mix in milk, eggs, and melted butter", "Mix until smooth", "Heat a griddle or frying pan to medium high", "Pour batter onto the griddle", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Light energy is absorbed by chlorophyll in a plant", "The light energy is used to convert carbon dioxide", "The plant uses nutrients in the soil", "The plant uses carbon dioxide in the air to produce glucose", "The plant uses the glucose to give itself energy", "Oxygen is released as a by product." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Sediment settles in a place due to gravity", "The sediment breaks down into small particles", "Wind or water picks up the sediment", "The sediment travels along the same route as the wind or water", "The sediment is deposited at new locations by the wind or water", "The sediment is picked up again by new wind or water", "The sediment travels further", "The sediment is deposited again in a new place." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The carafe is filled with water", "The water is poured into the machine at the back", "Coffee beans are put into a grinder", "The grinder is activated", "A filter is put into the coffee maker", "The ground coffee is put into the filter", "Sometimes a bit of salt is added to the grounds to bring out flavor", "The top of the machine is closed", "The power is turned on", "The water passes through the grounds and becomes coffee." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Salt water is contained in a factory or plant", "The water is boiled to a very high tempature", "The salt becomes seperated from the water", "The salt is removed", "The water is able to be drank at this point." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Begin the party", "Partake in activities", "Bring out the cake", "Sing 'Happy Birthday!'", "Blow out the candles", "Eat the cake", "Open the presents", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water gets into cracks in rocks", "The water freezes into ice", "The cracks expand", "Over time the rocks split", "The rocks are now in smaller pieces." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The earth develops cracks deep beneath the surface", "The cracks get very long and big in some places", "The earth places pressure against the rocks on both sides of the cracks", "The pressure causes the rocks to press against each other very hard", "The cracks continue to develop", "The earth moves against itself on both sides of the cracks", "The pressure and movement around the cracks causes the rocks to crumble in some places", "A lot of energy is released", "The energy causes seismic waves", "The seismic waves move the earth in an earthquake." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Sediment settles in a place due to gravity", "The sediment breaks down into small particles", "Wind or water picks up the sediment", "The sediment travels along the same route as the wind or water", "The sediment is deposited at new locations by the wind or water", "The sediment is picked up again by new wind or water", "The sediment travels further", "The sediment is deposited again in a new place." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "You take a tray", "Add water into the tray", "You insert the tray into a freezer", "The water molecules begin to slow down", "The water becomes ice", "The ice cubes are ready." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "You breathe oxygen into your body through the nose or mouth", "The oxygen travels to the lungs through the windpipe", "The air sacs in the lungs send the oxygen into the blood stream", "The carbon dioxide in the blood stream is transferred to the air sacs", "The lungs expel through the nose or mouth back into the environment." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The earth develops cracks deep beneath the surface", "The cracks get very long and big in some places", "The earth places pressure against the rocks on both sides of the cracks", "The pressure causes the rocks to press against each other very hard", "The cracks continue to develop", "The earth moves against itself on both sides of the cracks", "The pressure and movement around the cracks causes the rocks to crumble in some places", "A lot of energy is released", "The energy causes seismic waves", "The seismic waves move the earth in an earthquake." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Sunlight hits chloroplasts in the plant", "The energy from the sunlight causes an enzyme in the plant to break apart the water", "The water breakes into oxygen, hydrogen, and electrons", "Hydrogen, along with electrons energized by light, converts NADP into NADPH", "Oxygen diffuses out of the plant as a waste product of photosynthesis", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Plates on the Earth's crust move slowly past each other", "As the plates move, they exert a great force", "When the force is large enough, the crust breaks", "The stress is released as energy", "The energy moves through the Earth in the form of waves", "We feel the earthquake", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The organism must die to begin the process", "The soft tissue decomposes", "The bones are left behind", "Scavengers tear the body apart and move the bones elsewhere", "Wind and rain also scatter the bones further", "The bones left behind will weather and become buried by sand and soil", "The proteins in the bone are replaced with minerals that are dissolved in the soil", "This creates a rock-like substance called a fossil", "Water and wind erosion wear away the layers of soil on top of the fossil", "This makes discovery of the fossil possible." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Electrical signals in the brain travel through nerves to muscles", "Two types of proteins exist in filaments in the muscles", "The filaments move when the brain instructs them to", "The motion of the filaments cause the muscle to shorten and contract", "Opposing pairs of muscles exist in order to provide the necessary range of motion." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Wind and water erode rocks", "The wind and water pick up sediment that came off the rocks", "Sediment is carried to an area by the wind, water, air, or ice", "Sediment is deposited on the same spot many times", "The sediment piles on top of other sediment for a long time", "The sediment near the bottom is compressed by the weight of newer sediment", "The sediment becomes sedimentary rock as it is pushed together by the heavy weight", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Owls hunt around their hunting territory away from where they roost during the day", "They sit still on a perch, like a stump of branch, and wait for prey", "They use their highly sensitive hearing to locate prey that cannot be seen", "They use their very keen vision to see prey in the dark", "They fly silently, without flapping their wings, in order to surprise the prey", "The owl silently glides or drops on its prey, grabbing it with its talons and beak", "The owl eats the prey, or carries it back to its perch", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Place your non dominate foot on the front of the skateboard", "Push off with your other foot on the ground", "Keep pushing with your dominate leg", "When comfortable put both feet on the skateboard", "Balance your body as you roll on the skateboard." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Plants start growing on or near the rocks", "The roots of the growing plants start to break up the rock", "The plant acids dissolve the rock", "The rock is broken down into smaller pieces", "Erosion begins." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A mushroom gives off gills lined with basidia", "The basidia gives off spores", "The spores germinate", "The spores create Hyphae", "Multiple Hyphae meet and converge", "They join with Mycelium", "A hyphal knot forms in the ground", "A primordia shoots out of the ground", "A mushroom cap is formed." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A forest fire starts", "The trees and plants burn", "The animals lose their homes", "If the animals can not escape, they may die from smoke inhalation", "The plants that provide food are gone", "The animals have little to eat", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Magma is formed when rock melts inside the Earth's crust", "Magma rises", "Collects inside magma chambers underneath a volcano", "Pressure builds in the magma chambers as they fill", "Gain energy for eruption", "Some of the energy is converted into seismic activity (earthquakes)", "If the magma building in the volcano is thick and sticky it will trap gases", "Results in an explosive eruption when the pressure becomes too intense", "If the magma is thin and runs", "The magma results in a low-pressure, slow-moving flow of magma instead of a violent eruption", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A bird hatches from an egg", "The bird is nurtured by its parents", "And is fed food for growth", "The bird grows", "Begins to learn how to fly", "The bird matures", "The bird leaves its nest", "The bird makes its own nest." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Bats fly through an area", "The bat makes sounds with their mouth or nose", "The sound waves travel away from the bat", "The sound waves hit objects", "The sound waves bounce off the objects back towards the bat", "The bat hears the sound waves echoing off the objects", "The bat knows where the objects are because of where the sound echoed from", "The bat doesn't hurt itself by hitting the objects." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Dirty dishes are rinsed", "Placed into the dishwasher", "A detergent is added to the detergent dispenser", "The dishwasher is closed", "The power is turned on", "In about 1.5-2 hours, the dishes are clean", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The butterfly starts as an egg", "The egg hatches to form a larva, also called a caterpillar", "The carterpillar molts (loses its skin) many times as it grows", "The caterpillar then forms itself into a pupa, or chrysalis", "The caterpillar in the chrysalis begins change, a process called mmetaphorphosis", "The caterpillar completes its metamorphosis and has turned into a butterfly", "The adult butterfly emerges out of the chrysalis and flys away!", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Air goes into the lungs", "The lungs remove oxygen from the air", "Oxygen diffuses from alveoli in the lungs to the bloodstream", "Hemoglobin in red blood cells attaches to the oxygen", "Red blood cells carry oxygen all around the body", "Oxygen diffuses into cells from capillaries." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "People dig up coal from the ground", "People burn coal for heat or electricity", "Pollution from the coal goes into the sky", "Coal pollution enters clouds", "Clouds rain over an area", "The polluted rain becomes acid rain." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The organism must die to begin the process", "The soft tissue decomposes", "The bones are left behind", "Scavengers tear the body apart and move the bones elsewhere", "Wind and rain also scatter the bones further", "The bones left behind will weather and become buried by sand and soil", "The proteins in the bone are replaced with minerals that are dissolved in the soil", "This creates a rock-like substance called a fossil", "Water and wind erosion wear away the layers of soil on top of the fossil", "This makes discovery of the fossil possible." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Sediment settles in a place due to gravity", "The sediment breaks down into small particles", "Wind or water picks up the sediment", "The sediment travels along the same route as the wind or water", "The sediment is deposited at new locations by the wind or water", "The sediment is picked up again by new wind or water", "The sediment travels further", "The sediment is deposited again in a new place." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A mine is excavated in the side of a mountain", "Miners enter the mine", "Miners remove the coal from the mine", "The coal is placed into carts or on a conveyor belt", "The coal is moved up to the surface", "The coal is loaded onto a truck", "The truck takes the coal to a power station." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Water in the clouds becomes very cold", "The cold water forms ice crystals", "The ice crystals grow by absorbing surrounding water droplets", "Form snowflakes", "The snowflakes fall to the ground." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Food enters the body", "Food begins to be processed by the digestive system", "The pancreas releases enzymes to aid digestion", "Digested food affects the amount of sugar in the blood", "The pancreas releases one hormone to lower the blood sugar (glucose) level", "The pancreas releases another hormone to raisethe blood sugar (glucose) level." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A person breathes in oxygen", "The oxygen passes through the bronchial tubes to the lungs", "The oxygen is moved into the bloodstream", "Circulates through the body", "The cells in the body exchange the oxygen with carbon dioxide", "The bloodstream carries the carbon dioxide back to the lungs", "The lungs expel the carbon dioxide through the nose and mouth." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Fuel mixes with air", "Mix gets inducted into cylinder", "Piston compresses the mix", "Spark plug emits a spark that ignites it causing combustion", "Combustion gases expand", "Pushes piston during power stroke", "Exhaust valve opens to vent exhaust out tail pipe." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "As the sweat evaporates the sweat sheds molecules into the air", "The sweat changes into a gas", "Heat is drawn from the sweat", "This process draws heat from the body", "The evaporation also cools the remaining sweat on the body." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Spores are dispersed into the air by a mature mushroom", "The spores fall to the ground", "The spores germinate", "The spores begin to grow mycelium", "The mycelium begin to sprout a bud", "A new mushroom is formed." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The liver removes toxins from the blood", "Liver also cleans blood that has just been enriched with vitamins and minerals during digestion", "Liver processes the good stuff into forms that the rest of the body can use", "Waste or stuff your body doesn't need can be carried by bile back into the intestine or into the kidneys", "The liver also produces a digestive juice called bile that helps the body absorb fat into the bloodstream", "The liver also stores extra carbohydrates as glycogen for the body to use as fuel when needed." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Humans are born as babies", "Babies become infants", "Infants become children", "Children learn skills", "Children become teenagers", "Teenagers undergo puberty", "Teenagers become adults", "Adults have children", "Adults become elderly", "Elderly humans die." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Electromagnet creates magnetic field with electricity", "Conductive copper wire is wrapped around a piece of metal", "An electric current gets introduced from power source", "Flows through the wire", "Magnetic field gets created in the wire", "And the metal gets magnetized", "When turned off it is no longer magnetic." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Fault lines appear underground", "The fault lines grow over time", "The rocks on each side of the fault lines rub against the rocks on the other side of the fault line", "The rocks put pressure on each other", "The rocks break from the pressure", "The breaking of the rocks releases a lot of energy", "The energy causes seismic waves", "The seismic waves make the earth shake." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Magma comes up to the surface of the earth", "The magma cools", "Particles inside the magma move closer together", "Crystals are formed", "The crystals contain minerals." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Oxygen enters the body through the mouth or nose", "The oxygen travels into the lungs", "The oxygen binds to hemoglobin proteins within erythrocytes (red blood cells)", "The erythrocytes are pumped through the body by the heart", "All cells receive the oxygen." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Blood is sent to the liver", "The liver uses chemicals and proteins to treat the blood", "The blood is cleaned", "Energy is produced", "The blood leaves the liver cleaned." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The liver filters blood from the digestive tract", "The liver produces bile", "The liver produces proteins for blood plasma", "The liver converts excess glucose into glycogen for storage", "The liver converts ammonia to urea", "The liver regulates blood clotting." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Solar radiation reaches Earth's atmosphere", "Some is reflected back into space", "The rest of the energy is absorbed by land and oceans, heating the Earth", "Heat radiates from Earth to space", "Some of this heat is trapped by greenhouse gases in the atmosphere", "Human activities such as burning fuel are increasing the amount of greenhouses gases", "This causes more heat radiation to stay trapped in our atmosphere", "The Earth's temperature rises", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Greenhouse gases are released into the air by human activities", "The earth changes energy from the sun into heat", "Heat rises from the ground", "Greenhouse gas molecules in the atmosphere prevent the heat from going into space", "The temperature of the earth increases", "The temperature continues to rise and melts the polar ice caps", "The temperature rises even faster." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Boil salt water", "The water will turn into water vapor", "Collect the water vapor", "Allow the water vapor to cool", "The water vapor will turn into liquid water", "The salt will be separated from the water." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Prophase is the first and longest stage of mitosis", "In this stage the chromosomes become visible and the centrioles separate and move to opposite poles of the cell", "In prophase the chromosomes become visible and the centrioles separate and move to opposite poles of the cell", "In metaphase the chromosomes line up across the center of the cell and become connected to the spindle fiber at their centromere", "In anaphase the sister chromatids separate into individual chromosomes and are pulled apart", "During telophase the chromosomes gather at opposite ends of the cell and lose their distinct rod-like shapes", "Two new nuclear membranes then form around each of the two regions of DNA and the spindle fibers disappear." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Rain falls on wood", "The rain seeps into the wood surface", "It permeates the wood", "When rain evaporates it leaves the wood", "It takes the finish of the wood with it", "The wood begins to lose it's luster", "It begins to look bad", "It has pieces of paint missing from the rain", "It gets worse when it rains", "It eventually will have no paint left." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Carbon dioxide from the air passes through small pores (holes) in the leaves", "These pores are called stomata", "Water is absorbed by the roots and passes through vessels in the stem on its way to the leaves", "Chlorophyll absorbs the sun's energy", "It is this energy that is used to split water molecules into hydrogen and oxygen", "Oxygen is released from the leaves into the atmosphere", "Hydrogen and carbon dioxide are used to form glucose or food for plants." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A plant grows near or on a rock", "The plant roots begin to grow", "Break apart the rock", "The plant acids dissolve parts of the rock", "The rocks are broken into more and more pieces", "Erosion starts to occur." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "The salt water is heated", "As the saltwater is heated the water becomes a gas", "The salt particles sink to the bottom of the container", "Gaseous water is piped into another container", "Allowed to cool", "The salt particles are left behind in the first container", "The second container contains fresh water." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "There are places inside Earth where rock will melt", "Melted rock inside the Earth is also called molten rock, or magma", "Magma moves up through Earth's crust, but it does not always reach the surface", "When magma erupts onto Earth's surface, it is known as lava", "As lava flows from volcanoes it starts to cool", "Minerals form when magma and lava cool", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Animals and plants die in soft soil or mud", "Sediment builds up over the remains", "The remains decompose, leaving only trace amounts", "The remaining parts over the years are replaced with mineral", "A fossil is formed", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Bacteria enter the body", "Bacteria start to divide and grow", "The uncontrolled growth takes away resources from other cells", "Other cells cannot function properly", "We feel unwell", "The growth and division of bacteria produce toxins", "Toxins harm the body", "The body tries to react to the toxins", "The body's natural defenses can sometimes cause us to feel unwell." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A photovoltaic cell is created with two layers of semiconductor material", "The top layer are 'doped' with impurities to allow a negative charge", "The bottom layer are 'doped' to allow for a positive charge", "This produces an electric field that allows electrons to flow from negative to positve", "Sunlight enters the cell", "Energy from sunlight knocks electrons loose in both fields", "This prevents the flow of electrons from negative to positive", "Adding an external circuit allows the exchange to continue", "Give the cells owner a flow of electricity." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Food enters the body", "Food begins to be processed by the digestive system", "The pancreas releases enzymes to aid digestion", "Digested food affects the amount of sugar in the blood", "The pancreas releases one hormone to lower the blood sugar (glucose) level", "The pancreas releases another hormone to raisethe blood sugar (glucose) level." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Limestone is located under the soil", "Rain picks up carbon dioxide as it falls to earth", "The rain falls on the soil over the limestone", "The carbon dioxide in the rain washes through the soil", "The carbon dioxide turns into acid", "The acid in the rain gets to the limestone below the soil", "The acid dissolves the limestone", "Acid continues to erode the limestone with more rain over time", "The eroded limestone sometimes forms caves." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Add water to a pot", "Put the pot over a source of heat", "Turn the heat on", "Wait for a few minutes", "Begin to observe small bubbles in the water", "Wait until the water starts to bubble a lot", "Wait until you can see steam rising from the water", "Turn the heat source off", "Take the pot off of the heat source." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Energy builds up in the crust of the earth", "The energy causes the fault lines give way", "The earth's plates move", "The energy radiates outward from the fault in all directions", "The seismic waves shake the earth as they move through it." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A can is thrown away into a recycling bin", "The can is taken to a recycling center", "Melted down along with other cans", "The melted metal is turned into bars", "Becomes material for other products." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "A bird lays an egg", "The egg hatches into a baby bird", "Baby bird eats", "Grows into an adult bird", "The bird finds a mate", "The pair build a nest", "The birds lay eggs." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Air is brought in through the mouth", "Passes through the lungs", "And into the bronchial tissue", "The carbon dioxide is removed", "The lungs bring the oxygen to the rest of the body." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Items that can be reused are placed into recycling containers", "Recycling trucks pick up the items that are able to be reused", "The recyclable items travel to a recycling plant", "The items are sorted by what they are made of", "The items are broken down into small parts", "The small parts are melted to make new raw parts", "The raw parts are sold to manufactures to make new items." ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }

[ "Over 99% of the exocrine pancreas cells produce digestive juices", "They secrete digestive juice 'externally' into the small intestine", "There are enzymes for breaking down fats, proteins , and carbohydrates", "Digestive juices flows from the pancreas through an excretory duct into the small intestine", "When the blood sugar levels rise, as they might after a meal, insulin is released", "When blood sugar levels are too low, the pancreas releases glucagon into the bloodstream", "" ]

{ "text": [ "more", "less", "no effect" ], "label": [ "A", "B", "C" ] }