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Question
Oxygen is returned to the atmosphere mainly by ______.
Oxygen is returned to the atmosphere mainly by ______.
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Solution
The correct option is C photosynthesis
Photosynthesis is a process by which plants convert carbon dioxide into glucose in the presence of sunlight. Oxygen is liberated as a by-product of photosynthesis.
The other processes like decomposition, burning of fossil fuels, and respiration add carbon dioxide to the atmosphere.
photosynthesis
Photosynthesis is a process by which plants convert carbon dioxide into glucose in the presence of sunlight. Oxygen is liberated as a by-product of photosynthesis.
The other processes like decomposition, burning of fossil fuels, and respiration add carbon dioxide to the atmosphere.
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