Ques:Q: What form do biofuels take that makes them very useful? Choices: - crystals - solid - chemical - liquid A:

Ans:liquid
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Ques:Q: Gas particles can move randomly in what directions? Choices: - one direction - few directions - some directions - all directions A:

Ans:all directions
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Ques:Q: What were the first life forms found on earth similar to? Choices: - mold - ferns - viruses - bacteria A:

Ans:bacteria
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Ques:Q: Organic compounds are defined as covalently bonded compounds containing carbon, excluding carbonates and what else? Choices: - gases - crystals - acids - oxides A:

Ans:
oxides
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