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Which of the following is the first step in respiration?

Question 6 options:

Carbon dioxide passes from the blood to the lungs.

Carbon dioxide passes into capillaries to the blood.

Oxygen passes into capillaries to the blood.

Oxygen is taken into the lungs.

User Xukrao
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1 Answer

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D.You need to get oxygen in your lungs in order for the rest to happen


User Chris Lloyd
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