Alveoli are used for gas exchange in _________.

Name: Alveoli are used for gas exchange in _________.
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Alveoli are small air sacs in the lungs where oxygen and carbon dioxide are exchanged with the bloodstream. Therefore, alveoli are used for gas exchange in the lungs. Gills are responsible for gas exchange in aquatic animals, trachea is a tube that transports air to and from the lungs, and papulae are small structures used for gas exchange in sea stars.

Alveoli Are Used for Gas Exchange in _________