Ques:Q: What attaches a muscle to a bone? Choices: - marrow - arteries - veins - tendons A:

Ans:tendons
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Ques:Q: What are groups of tens to hundreds of thousands of stars held tightly together by gravity called? Choices: - elliptical clusters - elongated clusters - galaxy - globular clusters A:

Ans:globular clusters
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Ques:Q: Smoking increases the risk of cancer from what radioactive gas that can also be detected with a test kit for your home? Choices: - arsenic - carbon monoxide - carbon dioxide - radon A:

Ans:radon
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Ques:Q: The fact that all animals have certain traits in common shows that they share what? Choices: - a common gene - a common brain - a common planet - a common ancestor A:

Ans:
a common ancestor
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