Biology

What vitamin does the sun's ultraviolet rays help the skin produce?

More Questions from Biology
What adaptation allows an organism to look like another in order to survive?
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In which part of the bone is blood made?
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What happens to produce plant seeds?
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What are all the living and non-living things in one area called?
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How does an insect smell?
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Which is a change in the environment that brings a response?
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What system helps animals exchange carbon dioxide and oxygen?
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Where is the mandible found?
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