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Nimfa-mama [501]
3 years ago
5

Which of the following is the first step in respiration?

Health
2 answers:
ANTONII [103]3 years ago
5 0
Hey there!

The first step in respiration is that oxygen passes into the lungs.

Hope this helped, have a great day!
sweet-ann [11.9K]3 years ago
3 0
I gen passed in to capillaries to the blood
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