Fact 1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow. Fact 2: Breathing is regulated to keep as normal as possible arterial blood pH and PO2. Given the two facts above, what does breathing help balance acidity levels?
OPTIONS:
- blood
- muscles
- water
- air
- CO 2
- oxygen
- Gases
- protein

Answer: blood

Question: Fact 1: Astronauts require preserved food for extended flights. Fact 2: An astronaut is a scientist who is a space explorer. Given the two facts above, space explorers require preserved foods for?
OPTIONS:
- ground training
- nutrients
- Dehydration
- survival
- long flights
- short flights
- Special disposal
- day trips
Answer: long flights

input with options: Fact 1: Fossils are formed when layers of sediment cover the remains of organisms over time. Fact 2: Fossil fuels are formed from the remains of once living organisms that depended on light. Given the two facts above, fossils are formed when remains of living things are what?
OPTIONS:
- buried in mud
- break off
- covered over time
- Physical weathering
- By coral exoskeletons
- It remains dormant
- saved in a box
- kept in the dark
output: covered over time

Q: Fact 1: Plants exhibit phototropism, or growing toward a light source. Fact 2: Many light sources such as the sun and most artificial lights produce unpolarized light. Given the two facts above, what is called when plants grow toward the sun or an artificial light?

OPTIONS:
- Exfoliation
- Brownian motion
- heat energy
- phototropism
- photovoltaic
- autumn
- peachleaf willow
- mitosis

A: phototropism

input: OPTIONS:
- cows
- mammals
- elephants
- goats
- vessels
- crocodiles
- ferns
- chickens Now, answer this question: Fact 1: Veins generally carry deoxygenated blood. Fact 2: Arteries and veins are blood vessels. Given the two facts above, what carries deoxygenated blood?
A:
output: vessels

Question: Fact 1: Mutations that lead to cancer usually occur in genes that control the cell cycle. Fact 2: Mitosis is part of the cell cycle. Given the two facts above, mutations that lead to cancer usually effect genes that aid in what?
OPTIONS:
- illness
- health
- disease
- blood transfer
- chemotherapy
- respiraration
- mitosis
- recovery
Answer:
mitosis