Ques:Q: What does ozone in the stratosphere protect us from? Choices: - comets - acid rain - solar traces - solar rays A:

Ans:solar rays
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Ques:Q: What influence does the horizontal motion of a projectile have on free fall? Choices: - decrease acceleration - vertical - increase acceleration - none A:

Ans:none
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Ques:Q: What is the first stage of cellular respiration? Choices: - photosynthesis - amniocentesis - hydrolysis - glycolysis A:

Ans:glycolysis
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Ques:Q: During the embryonic stage of vertebrates, the notochord develops into what? Choices: - rib cage - umbilical cord - brain stem - backbone A:

Ans:
backbone
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