Nitrogen makes about 78% of the air we breathe. Nitrogen is extremely important in living things. <span>It forms the building blocks of proteins. We need proteins because they make up our skin and hair. Proteins also help us digest food. We get our nitrogen from plants, and plants get it from bacteria in the soil. Our atmosphere provides life with the nitrogen it needs.</span>
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4.77mol is the correct answer
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4 I believe is false and 5 is D I think
The organism would no longer grow.
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There is no chemical symbol for paper since it is not an element but rather a mixture of several different compounds. Mixtures in two or more phases are heterogeneous mixtures.
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