The major sources of oxygen on earth include the atmosphere, photosynthesis, and the earth's crust.
One consequence of this was that the first atmospheric oxygen came from the metabolism of microorganisms, the cyanobacteria, that used photosynthesis, but for which oxygen was an unwanted by‐product. In fact, the oxygen had to be discarded for the organisms to thrive.
MORE INFORMATION :
What are the sources of oxygen in the human body?
-The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
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The major sources of oxygen on earth include the atmosphere, photosynthesis, and the earth's crust.
One consequence of this was that the first atmospheric oxygen came from the metabolism of microorganisms, the cyanobacteria, that used photosynthesis, but for which oxygen was an unwanted by‐product. In fact, the oxygen had to be discarded for the organisms to thrive.
MORE INFORMATION :
What are the sources of oxygen in the human body?
-The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
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The major sources of oxygen on earth include the atmosphere, photosynthesis, and the earth's crust.
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