1.All livingbeings breathe in oxygen. But the percentage of oxygen does not decrease.
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Explanation:
all living things breathe in oxygen. ... The percentage of oxygen in the air does not decrease because it has been more or less balanced by the oxygen production due to the process of photosynthesis.
Answered by
1
Answer:
all living things breathe in oxygen. ... The percentage of oxygen in the air does not decrease because it has been more or less balanced by the oxygen production due to the process of photosynthesis.
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