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blagie [28]
3 years ago
11

Which process helps gas exchange to occur?

Biology
2 answers:
uysha [10]3 years ago
8 0

Answer:

D. Diffusion

Explanation:

"...oxygen diffuses from alveolar sacs to blood in capillaries CPR, or cardiopulmonary resuscitation, is a first-aid technique to help save lives."

romanna [79]3 years ago
6 0
The answer is a because I think so
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