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Question : The presence of oxygen in the atmosphere is due to:

Option 1: Photosynthesis

Option 2: Excretion

Option 3: Nitrogen fixation

Option 4: Respiration


Team Careers360 1st Jan, 2024
Answer (1)
Team Careers360 6th Jan, 2024

Correct Answer: Photosynthesis


Solution : The correct option is Photosynthesis.

Photosynthesis is a mechanism that plants and certain bacteria use to convert carbon dioxide and water into glucose (sugar) and oxygen. This process emits oxygen into the atmosphere and is required for the oxygen-carbon dioxide balance to be maintained.

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