Q: What is the sequence of elementary steps that together comprise an entire chemical reaction called? Choices: - reaction circle - mechanical mechanism - basic reaction - reaction mechanism A:
reaction mechanism
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Q: What are modified leaves that bear sporangia? Choices: - spines - neutrophils - sporozoans - sporophylls A:
sporophylls
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Q: Push or pull acting on an object is also called? Choices: - Gravity. - space - effort - force A:
force
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Q: Zinc reacting with hydrochloric acid produces bubbles of which gas? Choices: - carbon - helium - mustard - hydrogen A:
hydrogen
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