Biology

What happens to your skin's blood vessels as you exercise?

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What is a young bear called?
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In what habitat might an animal with a thick, warm coat live?
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What is any permanent change to a gene called?
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What are the first organisms to return to an area devastated by a major disaster?
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Which of these is a way dogs communicate with each other?
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What kind of stem would an oak tree have?
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A change of DNA in an organism that results in a new trait is known as what?
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What do red blood cells carry throughout the body?
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