Ques:Q: What are bones made up of? Choices: - molecules - platelets - muscles - tissues A:

Ans:tissues
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Ques:Q: What is the minimum depth in the aphotic zone? Choices: - 150 meters - 450 meters - 10 meters - 200 meters A:

Ans:200 meters
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Ques:Q: There are three different types of rna. all three types are needed to make what? Choices: - acids - lipids - Blood - proteins A:

Ans:proteins
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Ques:Q: What two gases are the main components of air? Choices: - oxygen and helium - carbon and oxygen - hydrogen and helium - nitrogen and oxygen A:

Ans:
nitrogen and oxygen
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