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Because those are 4 of the most abundant (or most reccuring) gases in Earth's atmosphere.

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15y ago

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What is the human body mostly made of a carbon oxygen nitrogen and hydrogen b oxygen calcium carbon and hydrogen c hydrogen iron nitrogen and oxygen?

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Coal is a type of rock that is comprised of mostly carbon, as well as small amounts of sulfur, hydrogen, oxygen, nitrogen, and ash.


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Carbohydrates are composed of carbon, hydrogen, and oxygen. Lipids are composed of carbon, hydrogen, and oxygen as well, but they have a higher ratio of carbon and hydrogen compared to oxygen. Proteins are composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.


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Howmany of hydrogen is in the atmosphere?

There is not much hydrogen in the air at all. The air mostly consists of oxygen, nitrogen, and carbon.


Is my body made mainly of metalloids?

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What are four main elements from which protein is made?

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What four elements make up 96 percent of living organisms?

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What are the elements in trinitrotoluene?

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