Q: In a fuel cell, energy is not stored; electrical energy is provided by what? Choices: - fusion reaction - carbon reaction - consumption reaction - chemical reaction A:
chemical reaction
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Q: What do many mollusks secrete for their protection? Choices: - mucus - sedimentation shell - microscopic shell - calcareous shell A:
calcareous shell
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Q: The two smallest carboxylic acids are formic acid and what else? Choices: - carbonates acid - ethylene acid - ascorbic acid - acetic acid A:
acetic acid
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Q: The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is called? Choices: - brain stem - lobes - thrombus - cerebrum A:
cerebrum
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