Biology, 21.07.2019 15:30, SKYBLUE1015

An adam's number of protons is always the same as it's valence electrons. true or false?

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Biology, 21.06.2019 23:50, jaiyaharoldjh

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Biology, 22.06.2019 02:00, rhodesnyla01

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.