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because these 4 elements that are listed are the most common elements on planet earth. most percentage of the eart is made of there 4 elements but not all some elments like iron are also there but a extremly small percentage

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15y ago
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15y ago

These elements are the primary constituents of living organisms and form the basis from which life exists on Earth.

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8y ago

These are the elements that primarily form living things. CHON, especially, are the elements of life.

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Q: Why are the elements carbonhydrogenand nitrogen important to life on earth?
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