Ques: Q: What do increasing greenhouse gas concentrations in the air do to the earth's temperature? Choices: - Lower it - stable it - Pollute - raise it A:
Ans: raise it

Ques: Q: Water, carbon dioxide, and what other element are important agents of chemical weathering? Choices: - helium - methane - sulfur - oxygen A:
Ans: oxygen

Ques: Q: In winter, water does what, becoming solid and causing hoses to rupture and engine blocks to crack? Choices: - crystallizes - shrinks - fractures - freeze A:
Ans: freeze

Ques: Q: Which is the process through which leaves collect sunlight and make food? Choices: - Greenhouse - compress - richness - photosynthesis A:
Ans:
photosynthesis