5. In humans, the air which reaches the alveoli is
a. rich in oxygen and poor in carbon dioxide.
b. rich in oxygen.
c. rich in hydrogen.
d. poor in oxygen.
Answers
Answered by
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Explanation:
(b) rich in oxygen.
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Answered by
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Answer:
( b ) rich in oxygen
In humans, the air which reaches the alveoli is
rich in oxygen.
Explanation:
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