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Rashid [163]
3 years ago
9

Why does the combination of respiration and photosynthesis allow a sealed environment to survive almost indefinitely?

Biology
2 answers:
const2013 [10]3 years ago
6 0
I would say A or C different part of the food chain
Anastasy [175]3 years ago
3 0

Answer:

A. They recycle each other's materials.

Explanation:

Respiration brings out carbon dioxide which is good for photosynthesis.

And photosynthesis also brings out oxygen used for respiration.

Hope it helps.

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