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Why is lighter skin beneficial in parts of the world with low UV exposure? (Use vitamin D in your answer)
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Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)
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Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?
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Why is lighter skin beneficial in parts of the world with low UV exposure?
(Use vitamin D in your a...
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