Ques:Q: What is freshwater below the earth's surface called? Choices: - geyser - sediment - precipitation - groundwater A:

Ans:groundwater
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Ques:Q: What do you call the type of molecular signals that include insulin and that help regulate a number of biochemical processes? Choices: - nerves - acids - enzymes - hormones A:

Ans:hormones
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Ques:Q: What is another name for composite volcanos? Choices: - fjords - fault lines - seismic giants - stratovolcanoes A:

Ans:stratovolcanoes
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Ques:Q: What is an interesting example of a molecule with two central atoms, which are both c atoms? Choices: - chloride - water - sulfur - acetylene A:

Ans:
acetylene
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