Q: Developing cars that run on hydrogen gas can help solve our dependence on what? Choices: - oxygen - food - water - nonrenewable fossil fuels A:
nonrenewable fossil fuels
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Q: What is the separation of compounds on the basis of their solubilities in a given solvent? Choices: - solvent law - fractional mass - volatile crystallization - fractional crystallization A:
fractional crystallization
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Q: Unlike prokaryotes, eukaryotes have what? Choices: - cell membrane - golgi apparatus - cell wall - cell nucleus A:
cell nucleus
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Q: The ozone layer protects the earth from what? Choices: - pollution - light waves - radio waves - uv radiation A:
uv radiation
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