Ques: Answer the following question given this paragraph: 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: Answer the following question given this paragraph: Water, carbon dioxide, and oxygen are important agents of chemical weathering. Q: Water, carbon dioxide, and what other element are important agents of chemical weathering? Choices: - helium - methane - sulfur - oxygen A:
Ans: oxygen

Ques: Answer the following question given this paragraph: In the winter, the temperature often gets well below the freezing point of water. This condition can create problem in car radiators. If the water freezes, water hoses will break, the engine block can crack, and significant damage can be done to the car. 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: Answer the following question given this paragraph: Leaves are the keys not only to plant life but to virtually all life on land. The primary role of leaves is to collect sunlight and make food by photosynthesis. Leaves vary in size, shape, and how they are arranged on stems. You can see examples of different types of leaves in Figure below . Q: Which is the process through which leaves collect sunlight and make food? Choices: - Greenhouse - compress - richness - photosynthesis A:
Ans:
photosynthesis