Which process helps gas exchange to occur?
2 answers:
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."
The answer is a because I think so
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C is the best answer
Explanation:
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For the last question it's either C or D.
The correct answer is evaporation. Hope this helps
