Biology
What does the substance melanin control?
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Who devised a simple test to determine the health of newborns?
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What beak shape would let a bird get nectar from long, thin, tubular flowers?
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Which of the following was a category of organizing plants according to Aristotle?
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What insect looks like a twig on a branch, bush or tree?
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What adaptation allows an organism to look like another in order to survive?
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What is a reddish-orange pigment found in fruits, vegetables, and other plants?
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