Q: Fact 1: Burning fossil fuels increases the carbon in the atmosphere. Fact 2: Global warming is caused by carbon dioxide trapped in the atmosphere. Given the two facts above, what kind of fuel use adds the most to global warming?

OPTIONS:
- elbow grease
- vehicles
- fossil
- Pollution
- engines
- Cars
- hydroelectricity
- solar energy

A: fossil

Q: Fact 1: Alight bulb converts electrical energy into light energy when it is turned on. Fact 2: Fluorescent light bulbs use half the electricity of standard bulbs. Given the two facts above, what do flourescent bulbs do?

OPTIONS:
- Change colors
- reproduce
- staying warm
- dormant state
- direct energy
- spread flower seeds
- use less energy
- duplicate itself

A: use less energy

Q: Fact 1: Wetlands are extremely important biomes. Fact 2: Biomes are the world's major habitats. Given the two facts above, wetlands are what major world habitats?

OPTIONS:
- uninhabitable
- swamp vegetation
- void
- food and shelter
- vegetation
- extremely important
- unimportant
- the environment

A: extremely important

Q: Fact 1: Aplanet rotating causes cycles of day and night on that planet. Fact 2: Of all the planets, Mars is most like Earth. Given the two facts above, what rotates causing cycles of day and night?

OPTIONS:
- bushes
- Mars
- wind
- Winter
- corn
- Sun
- motors
- rings

A:
Mars