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3 years ago

8

8. Humans need oxygen to break down food in order to provide energy for cells. The oxygen needed for this process is delivered b

y an organ system called the A. respiratory system. B. lungs. C. digestive system. D. alveolus.

2 answers:

Marina86 [1]3 years ago

7 0

Answer:

The answer is B. Lungs

Aleonysh [2.5K]3 years ago

7 0

Answer: B

Explanation: we use lungs to breathe, so we take oxygen by lungs.

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