fact and question: carbon dioxide can be found in the air
Question: Carbon dioxide exists where it does because

What's the answer? OPTIONS:
- humans expel it
- deer eat it
- birds use it
- trees absorb it

answer: humans expel it

fact and question: rabbits eat plants
Question: A bunny is desperate for food and happily chows down when offered

What's the answer? OPTIONS:
- a meatball
- some oregano
- cat food
- a steak

answer: some oregano

fact and question: the slope of the land causes a river to flow in a particular direction
Question: If a river is flowing down the east side of a hill, then the hill

What's the answer? OPTIONS:
- drops at a slow rate
- drops sharply right there
- drops sharply on the west
- is evenly sloped everywhere

answer: drops sharply right there

fact and question: the moon does not contain water
Question: The moon is absent of

What's the answer? OPTIONS:
- craters
- gravity
- H2O
- CO2

answer:
H2O