What is an Oxygen Cycle? The oxygen cycle is a biological process that helps maintain the level of oxygen through three main spheres of the earth, including: Atmosphere (layer of gases presents above the earth’s surface) Lithosphere (solid outer section along with the earth’s crust) (ecosystem together build biosphere) In other words, it is the cycle that helps to move oxygen through the three central regions of the earth, i.e., the Atmosphere, the biosphere, and the Lithosphere. If we ... What is the Oxygen Cycle? The oxygen cycle portrays how the flow of oxygen occurs through several parts of our vast ecosystem. Oxygen is found in several parts of the ecosystem, from the air we breathe (Atmosphere), the water bodies on the planet (Hydrosphere), inside all the biological beings (Biosphere) and inside the earth’s crust (Lithosphere). The oxygen cycle elaborates how oxygen circulates in various forms through nature. Oxygen occurs freely in the air, trapped in the earth crust as chemical compounds, or dissolved in water. Oxygen in the atmosphere is about 21%, and it is the second most abundant gas after nitrogen. It is mostly utilized by living organisms, especially man and animals in respiration. Oxygen is also the most common element of human body. Oxygen is also used during combustion, decomposition, and oxidation. The ... The oxygen cycle is mainly involved in maintaining the level of oxygen in the atmosphere. The entire cycle can be summarized as, the oxygen cycle begins with the process of photosynthesis in the presence of sunlight, releases oxygen back into the atmosphere, which humans and animals breathe in oxygen and breathe out carbon dioxide, and again linking back to the plants. This also proves that both the oxygen and carbon cycle occur independently and are interconnected to each other.
