Describe the path of an oxygen atom through four reservoirs of the oxygen cycle. Explain the process involved in the transfer between these reservoirs. Also, note the reservoirs in the path where the oxygen atom bonds to a carbon atom.

The oxygen cycle is a biogeochemical cycle, in which oxygen is circulated through the lithosphere, atmosphere, rhizosphere, and biosphere. The amount of oxygen present in the Earth's atmosphere is 21%.

The oxygen's primary reservoirs are the biosphere, atmosphere, and lithosphere.

The atmosphere or the air constitutes 21% of the oxygen. The organisms present on the terrestrial surface consume oxygen via respiration.

In the biosphere, autotrophs like plants produce oxygen via photosynthesis. The oxygen is then delivered to the atmosphere, where it is again utilized by terrestrial organisms.

The oxygen when dissolved in the water is used by marine organisms in the form of dissolved oxygen.

In the lithosphere, the oxygen is circulated through chemical weathering, which the formation of iron oxides. Chemical weathering can lead to the release of oxygen in the atmosphere.

Therefore, the oxygen can be circulated through terrestrial organisms, marine animals, the lithosphere, and the atmosphere through different processes like weathering and photosynthesis.

To know more about the circulation of oxygen, refer to the following link:

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The four main reservoirs of oxygen cycle are terrestrial biosphere, marine biosphere, lithosphere and atmosphere.

Explanation:

Oxygen is present about 21 % in the atmosphere which comes to the earth surface i. e. terrestrial biosphere where animals and microbes use this oxygen for the process of respiration while plants are the only organisms which produces oxygen in the process of photosynthesis and this oxygen goes to the atmosphere. This atmospheric oxygen also dissolve in water which is used by the marine animals. Oxygen atom is also present with carbon atom in the form of food molecules such as glucose which is produced inn the process of photosynthesis.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.