Insects do not have lungs. 

In armor is just a slit to allow live animals: the mouth, through which food is absorbed, the excretion hole in the back to get rid of useless things and trachea, open a small, usually on both sides through which air is inhaled.

Ảnh minh họa

Insects breathe in simply by means of the tube, through which air thrachea be transported into the body.

The narrow tube allows oxygen to reach all the cells of the body.

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