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Biology, 21.06.2019 23:00
Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.
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Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus
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Which three substances make up each of the smaller molecules that form proteins
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