zabeShay1laamber zabeShay1laamber

20-04-2017
Biology

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Tiny sacs in the lungs where oxygen exchange takes place. fundamental working unit of the nervous system. sometimes called the master gland.

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Fanglin Fanglin

01-05-2017

The answer for the first one would be the Alveoli

the second one is the pituitary gland

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