96 Explain how the oxygen in the air is replaced.

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Solution

All living organisms consume oxygen present in the air.
The process of respiration uses oxygen present in the air, but this is constantly replaced by plants through the photosynthesis process. In this process, plants make their own food, and oxygen is produced along with it. Plants also consume oxygen for respiration, but they produce more than they consume.
$begin mathsize 14px style stack 6 C O subscript 2 open parentheses g close parentheses with Carbon space Dioxide below plus space stack 6 H subscript 2 O with Water below open parentheses l close parentheses yields with Chlorophyll below and sunlight on top stack C subscript 6 H subscript 12 O subscript 6 with Glucose below open parentheses aq close parentheses plus stack 6 O subscript 2 with Oxygen below open parentheses g close parentheses end style$
The balance of oxygen and carbon dioxide in the atmosphere is maintained through respiration in plants and animals and by the photosynthesis in plants. This shows the interdependence of plants and animals.

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