what is oxygen cycle?
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The oxygen cycle is the biogeochemical cycle of oxygen within its four main reservoirs: the atmosphere, the total content of biological matter within the biosphere, the hydrosphere, and the lithosphere/Earth's crust.
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The oxygen cycle is a biogeochemical cycle that describes the movement of oxygen within the earth's three main reservoirs which are the atmosphere (air), the hydrosphere (water), and the lithosphere (land).
Oxygen is constantly used and generated by different processes on Earth and all these processes together make up the oxygen cycle.
What are these processes?
1. Processes that generate oxygen:
- the oxygen is produced by plants via photosynthesis. Plants are the main creator of oxygen in the atmosphere.
- some oxygen is produced when sunlight reacts with water vapour in the atmosphere.
2. Processes that uses oxygen:
- all organisms use oxygen for respiratory.
- when plants and animals die, they decompose. This process uses oxygen and releases carbon dioxide.
- the process of oxidation uses oxygen causing metals to rust.
- the process by which fire is generated also uses oxygen and releases carbon dioxide.
How the oxygen cycle takes place?
1. Photosynthesis
2. Respiration
3. Repeat.
