Ques:Q: An ether is an organic compound in which two hydrocarbon groups are bonded to the same atom of what? Choices: - hydrogen - sulfur - nitrogen - oxygen A:

Ans:oxygen
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Ques:Q: What force pulls objects toward the center of the earth? Choices: - kinetic energy - centrifugal force - momentum - gravity A:

Ans:gravity
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Ques:Q: What process is the opposite of fusion and releases energy only when heavy nuclei are split? Choices: - activation - osmosis - diffusion - fission A:

Ans:fission
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Ques:Q: Plant-like protists are autotrophs capable of what process? Choices: - sexual reproduction - microevolution - regeneration - photosynthesis A:

Ans:
photosynthesis
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