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The basic difference between Ecosystem and Community is that Ecosystem consists of various communities which include living as well as non–living components interacting with each other, whereas interaction of different individuals of populations of different species living in a particular geographical area is called Community. The community consists of only biotic factors only.
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The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air.
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<h3>plant has cell wall but animals don't have </h3>
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Chemogeny may be a theory of chemical evolution that depends on the chemical reactions and formation of drugs on the bases of chemical reactions. This theory says that “Life occurs as a results of evolution of inorganic matter”.
In the 1920's Scientists Oparin and Haldane, developed this hypothesis of the chemical origin of life from the primitive atmosphere of the world having matter like methane, ammonia and water. there have been very low concentrations of oxygen thanks to the presence of high temperatures like 5000-60000C. So, these conditions weren't suitable for the free existence of organic compounds, so reactions started happening .
Under conditions like high sunlight and warmth , inorganic matter gets converted to inorganic compounds. And this might end in the storage of organic compounds, which gets more and more concentrated with the passage of many years.
These compounds interact with one another and end in “life”.
So, chemogeny is that the process of chemical evolution of earth and formation of life from pre-existing matter with the assistance of chemical reactions.
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Hopefully I was able to help you with the concept. Good luck!
