Ques:Q: What is the name for the sinking of the dense, salty seawater in cold climates? Choices: - cyclones - jet stream - tidal activity - downwelling A:

Ans:downwelling
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Ques:Q: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? Choices: - oil rain - ozone rain - dioxide rain - acid rain A:

Ans:acid rain
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Ques:Q: The important equation pv = nrt holds true for substances in what state of matter? Choices: - solids - liquids - products - gas A:

Ans:gas
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Ques:Q: What is a thin layer of gas that surrounds earth called? Choices: - the cloud cover - the dioxide - the wind cycle - the atmosphere A:

Ans:
the atmosphere
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