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Describe oxygen cycle.

Biology

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Answer

The oxygen cycle describes the movement of oxygen through the atmosphere, biosphere, and lithosphere.

Step-by-step solution

3 steps

  1. Oxygen production

    • Plants and other photosynthetic organisms release oxygen into the atmosphere through photosynthesis.

  2. Oxygen consumption

    • Animals and humans take in oxygen for respiration, releasing carbon dioxide.
    • Oxygen is also consumed during combustion (burning) and the decomposition of organic matter.

  3. Oxygen recycling

    • The carbon dioxide released by respiration and combustion is then used by plants for photosynthesis, completing the cycle. Oxygen also forms ozone in the upper atmosphere and is found in water molecules.
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