Oxygen cycle

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Oxygen cycle on earth illustration #Ad , #SPONSORED, #cycle#Oxygen#illustration#earth Oxygen Illustration, Oxygen Cycle, Microbiology Study, Earth Cycles, Cycle Drawing, Carbon Cycle, Earth Illustration, Graphics Design Ideas, Baby Life Hacks

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Oxygen cycle | ecology | Britannica.com Oxygen Cycle, Carbon Cycle, Earth Atmosphere, Carbon Dioxide, Tropical Rainforest, Photosynthesis, All About Plants, Plant Life, Ecology

oxygen cycle, circulation of oxygen in various forms through nature. Free in the air and dissolved in water, oxygen is second only to nitrogen in abundance among uncombined elements in the atmosphere. Plants and animals use oxygen to respire and return it to the air and water as carbon dioxide (CO2). CO2 is then taken up by algae and terrestrial green plants and converted into carbohydrates during the process of photosynthesis, oxygen being a by-product. The waters of the world are the main…

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