A student wrote the following about the lungs.When we breathe in, our lungs inflate, sucking air in and pushing the ribsup and out, and forcing the diaphragm down. This is called respiration. Inthe air sacs of the lungs, the air enters the blood. The blood then takes theair around the body, where it is used by the cells. The blood returns to thelungs to be cleaned. When we breathe out, our lungs deflate, pulling thediaphragm up and the ribs down. The stale air is pushed out of the lungs.The student did not have a good understanding of the workings of thelungs. Re-write their description, using correct biological words and ideas.
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Ответ:
Its the 3rd one.
Explanation:
I just answered it..