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a compound is a kind of substance & substances are made of matter | a compound is made of matter |
matter in the liquid phase has definite volume and indefinite shape & a compound is made of matter | a compound in the liquid phase has definite volume and indefinite shape |
matter in the liquid phase has definite volume & if something has a definite volume , then its volume will not change when transferred into a different container | liquid sample will retain its volume when transferredn to a different container |
particles in a liquid flows past each other & particles in a liquid are close to each other | particles in a liquid are close and can flow past each other |
particles in a liquid are close and can flow past each other & the particles in the substance are close and able to flow past each other | the substance could be in liquid phase |
the substance has a variable shape & matter in the liquid phase has variable shape | the substance could be in liquid phase or gas phase |
the substance could be in liquid phase & the substance could be in liquid phase or gas phase | the substance can only be in liquid phase |
seeing requires light & reading requires seeing | reading requires light |
reading requires light & a light bulb generates visible light when it is turned on | a light bulb can help generate light for reading |
an airplane is fast in speed & an airplane is used for moving people to far away places | an airplane can move people to far away places quickly |
a airplane is used for moving products across bodies of water & a ship is used for moving products across bodies of water | ship or airplane can move products across bodies of water |
ship or airplane can move products across bodies of water & an ocean is a kind of body of water | ship or airplane can move products across ocean |
a cake is a kind of baked product & baking is when a human makes food by adding heat | a cake is a product made by human adding heat to it |
transportation technology is used for moving people / products & transportation technology is a kind of system for moving people and products | transportation technology is a system that moves people and products |
astronomers study celestial objects & a telescope is used for observing celestial objects by astronomers | astronomers use telescopes to observe celestial objects |
astronomers use telescopes to observe celestial objects & a telescope is a kind of optical instrument for observing celestial objects | astronomers use optical instruments to observe celestial objects |
a microscope is used to see small things by making them appear bigger & biologists study small things such as cells | biologists use micropscopes to see small things |
biologists use micropscopes to see small things & a microscope is a kind of optical tools for observing small things | biologists use optical tools to observe small things |
biologists use optical tools to observe small things & tool means instrument | biologiests use optical instruments to observe small things |
astronomers use optical instruments to observe celestial objects & biologiests use optical instruments to observe small things | astronomers and biologists both use optical instruments to make observations |
astronomers and biologists both use optical instruments to make observations & making scientific discoveries requires observing | astronomers and biologists both use optical instruments to make scientific discoveries |
companies irradiate some fruits and vegetables & irradiating food can be used to kill existing microorganisms in the food | companies irradiate some fruits and vegetables to kill existing microorganisms in the food |
companies irradiate some fruits and vegetables to kill existing microorganisms in the food & killing microorganisms in food can be used to extend the shelf life of that food | companies irradiate some fruit and vegetables to extend the shelf life of that food |
making products for cheaper has a positive impact on manufacturing & a mass production manufacturing system makes products more cheaply than a custom manufacturing system | a mass production has a positve impact on manufacturing by making products for cheaper |
a mass production has a positve impact on manufacturing by making products for cheaper & cheap means low in cost | a mass production has a positive impact on manufacturing by making products at a low cost |
something that is used for communication increases communication & a radio is used for communication & a computer is used for communication / finding information | a computer and a radio increase communication |
a computer and a radio increase communication & communication is used to share information | radios and computers increase the sharing of information |
radios and computers increase the sharing of information & a weather report is a kind of information | radios and computers increase the sharing of weather report |
radio station broadcasting is a source of radio waves & a source of something emits that something | radio station broadcasting emits radio waves |
radio station broadcasting emits radio waves & radio transmitter emits radio waves | radio station is a radio transmitter |
sandpaper is used to smooth the surface objects & sandpaper is a kind of tool for smoothing objects | sandpaper is a tool for smoothing the surface objects |
an engineer constructs a prototype from wood & a prototype is a kind of object | the wooden prototype is a kind of object |
sandpaper is a tool for smoothing the surface objects & the wooden prototype is a kind of object | sandpaper can be used to smooth the surface of the wooden prototype |
sandpaper can be used to smooth the surface of the wooden prototype & the engineer needs a tool to smooth the surface of the wooden prototype | the engineer can use sandpaper to smooth the surface of the wooden prototype |
pliers are made of two levers for gripping & pliers are a kind of hand tool | pliers are a tool made of two levers for gripping |
pliers are a tool made of two levers for gripping & gripping produces gripping force | pliers are a tool that can produce gripping force |
pliers are a tool that can produce gripping force & a gripping force can be used to tighten a mechanical fastener | pliers can be used to tighten a mechanical fastener |
computers are usually designed with weight restriction & a restriction can be used to limit something / keep something low | a weight restriction on computers can keep the weight of the computer low |
a weight restriction on computers can keep the weight of the computer low & a computer is a kind of object & as the weight of an object decreases , the object will be transported more easily | if the computer is low in weight, then the computer can be transported easily |
scientists make observations & lightning is a kind of weather phenomenon & weather phenomenon can be observed | scientists make observations on lightning |
scientists make observations on lightning & lightning is a kind of electrical discharge | scientists make observations on electrical discharge in the form of lightning |
planets orbit stars & gravity causes orbits | gravity causes planets to orbit stars |
gravity causes planets to orbit stars & the sun is a kind of star & planets in the solar system orbit the sun | gravity causes the planets in solar system to orbit the sun |
gravity causes the planets in solar system to orbit the sun & isaac newton discovered the theory of gravity | isaac newton discovered that gravity causes the planets in the solar system to orbit the sun |
something that is used for communication increases communication & a computer is used for communication / finding information | a computer can increase communication |
exercise is a kind of physical activity & some types of new technology cause physical activity to decrease | some types of new technology cause exercise to decrease |
decreasing something positive has a negative impact on a thing & exercise has a positive impact on a human 's health | decreasing exercise has a negative impact on a human's health |
some types of new technology cause exercise to decrease & decreasing exercise has a negative impact on a human's health | some types of new technology cause a negative impact on a human's health |
food is a kind of substance & louis pasteur discovered that heating the substance for a short time can kill the bacteria inside | heating food for a short time can kill the bacteria inside |
heating food for a short time can kill the bacteria inside & if the bacteria in food are killed , then the food will be stored longer | heating food for a short time can help store foods for longer |
farming produces food & farming is a kind of process | farming is a process of producing food |
farming is a process of producing food & farming technology is used on farming | farming technology is used on the process of producing food |
farming technology is used on the process of producing food & if technology used for a process is improved then the product produced by that process will increase | if farming technology is improved then the food produced by farming will increase |
if farming technology is improved then the food produced by farming will increase & farming technology is improved | the food produced by farming will increase |
replacing something decreases that something & advances in technology sometimes cause human jobs to be replaced by more efficient machines | advances in technology decrease human jobs by replacing them with efficient machines |
advances in technology decrease human jobs by replacing them with efficient machines & having a job has a positive impact on a human & decreasing something positive has a negative impact on a thing | advances in technology decreasing human jobs by more efficient machines has a negative impact on human |
chemical splashing can cause harm to humans / to the eyes & chemical splashing sometimes occurs during experiments | chemical splashing during experiments can cause harm to the eyes |
chemical splashing during experiments can cause harm to the eyes & safety goggles are used for protecting the eyes during experiments | safety goggles can be used for protecting the eyes from chemical splashing |
corrosive substance can cause harm to the eyes & acids are corrosive & a base is corrosive | acids and bases can cause harm to the eyes |
acids and bases can cause harm to the eyes & students have to work with acids and bases for experiments | acids and bases may cause harm to students' eyes during experiments |
acids and bases may cause harm to students' eyes during experiments & safety goggles are used for protecting the eyes during experiments | safety goggles can be used to protect students' eyes from acids and bases |
yearly water usage in the usa is collected and needed to be presented & yearly means every year & water usage is a kind of data | yearly water usage in the usa is a kind of data over time |
yearly water usage in the usa is a kind of data over time & a line graph is used for showing change / data over time | a line graph can be used to show yearly water usage in the usa |
a circle graph / pie graph can be used to display percents / ratios & the percent of various materials in solid waste needs to be presented in a type of graph | the percent of various materials in solid waste can be presented in a circle graph |
a line graph is used for showing change / data over time & a line graph is a kind of graph of connected data points | a line graph is used for showing change over time through connected data points |
a line graph is used for showing change over time through connected data points & the change in squirrels' population over time needs to be shown in a graph | the change in squirrels' population over time can be shown using a line graph through connected data points |
a student wants to record the data of the growth of a vine over a period of a day & days are a kind of unit for measuring time | the student wants to record the data of the growth of a vine over a period of time |
the student wants to record the data of the growth of a vine over a period of time & a line graph is used for showing change / data over time | a line graph an be used to show the data of the growth of the vine over a period of time |
a pie chart is a kind of graph & a pie chart is used for showing percentages & the percentages of the plant types in the deer diet need to be shown in a graph | the percentages of the plant types in the deer diet can be shown in a pie chart |
plant is a kind of oragnism & a lemon tree is a kind of plant | a lemon tree is a kind of organism |
a lemon tree is a kind of organism & cold temperatures usually have a negative impact on organisms | cold temperatures have a negative impact on the lemon trees |
cold temperatures have a negative impact on the lemon trees & a greenhouse is used to protect plants by keeping them warm & a lemon tree is a kind of plant | a greenhouse can be used to protect the lemon trees by keeping them warm |
soil is a kind of material & texture is a property of surfaces / materials / objects and includes ordered values of smooth / rough | texture is a property of soil |
texture is a property of soil & the properties of something can be used to identify / used to describe that something | texture can be used to identify soil |
texture can be used to identify soil & touch can be used for detecting texture | touching the soil can be used to identify the soil by detecting its texture |