Problem:OPTIONS:
- Park cars
- Start panicking
- reproduce
- growth
- Bloom slower
- adding heat
- Regrows it
- Grow well

Fact 1: Agreenhouse is used to protect plants by keeping them warm. Fact 2: With lots of rain and a warm climate, plants grow well. Given the two facts above, what does a greenhouse help plants do?
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A: Grow well

Problem:OPTIONS:
- water
- glucose
- food
- sunlight
- bacteria
- Light
- adding heat
- The Sun

Fact 1: Phytoplankton are bacteria and algae that use sunlight to make food. Fact 2: Food gives energy. Given the two facts above, what do phytoplankton and algae need in order to make energy?
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A: sunlight

Problem:OPTIONS:
- our planet
- environment
- state
- all matter
- our star
- blood pH
- cigarettes
- fronts

Fact 1: Blood pH may become unbalanced if the rate of breathing is too fast or too slow. Fact 2: When a compound is unbalanced it becomes unbalanced and unstable. Given the two facts above, if the rate of breathing is too fast or too slow, what my become unstable?
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A: blood pH

Problem:OPTIONS:
- killing insects
- Shoot them
- kill them
- protect them
- Extend them
- Shed them
- Retract them
- behave

Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Puffers are smooth skinned while Porcupines have the characteristic spines or quills. Given the two facts above, what does a porcupine do with its spines when it's threatened?
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A:
Extend them