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Arada [10]
3 years ago
6

What is the primary role of the respiratory system in humans? Question 1 options: a. To make carbon dioxide b. To obtain oxygen

c. To use up nitrogen d. To find hydrogen
English
1 answer:
rewona [7]3 years ago
6 0

Answer:

Definitely B................. To obtain oxygen

Explanation:

5 stars plz :)

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