Indicate the main sources of atmospheric oxygen.
| January 11, 2021 | education
Like all elements, oxygen is created by fusion inside a star’s core. Hydrogen merges into helium, then hydrogen and helium merge into oxygen.
There are many sources of oxygen, some of which are the respiration of plants and animals and the decomposition of dead plants and animal materials. The main source of atmospheric free oxygen is photosynthesis, which produces sugars and free oxygen from carbon dioxide and water: photosynthetic organisms include plant life in land plots as well as phytoplankton of the oceans.
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