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In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -
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The carrier molecules of the electron transport system are located in the
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In order for you to hold your breath, your nervous system must send messages to your a. respiratory system b. digestive system c. heart in your cardiovascular system d. check in your muscular system
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Which reason best explains why carbon is able to form macromolecules?
A. carbon is a very large el...
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