Question

3. The lungs bring into the body, and eliminates from the body
a. carbon monoxide, oxygen c. carbon monoxide , carbon dioxide
b. oxygen, carbon dioxide
d. oxygen, carbon monoxide​

Answer 1

The primary function of the respiratory system is to take in oxygen and eliminate carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli. The layers of cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other.

Answer 2

Answer:

b. oxygen, carbon dioxide

Explanation:

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