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It is called amino acids,amino acids are molecules composed of atoms of carbon, hydrogen,nitrogen, oxygen, and in some cases sulfur. Hope this helps
I think this is an example of competitive exclusion principle. Competitive exclusion principle is a proposition that two species competing for the same limiting resource can not coexist at constant population values.For Example the Red squirrel is native to Britain but its population has declined due to competitive exclusion, disease and the disappearance of hazel coppices and mature confer forests i law land Britain.