Q: What is the hardest of all minerals? Choices: - titanium - gold - platinum - diamonds A:
diamonds
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Q: Bromide is present in brines, which are naturally occurring solutions of what? Choices: - iron - calcium - magnesium - salt A:
salt
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Q: What is the force of attraction between two masses? Choices: - electricity - inertia - momentum - gravity A:
gravity
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Q: Protozoa can be classified on the basis of how they? Choices: - smell - look - feel - move A:
move
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