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Nitrogen, fundamental for cellular structure, is required by plants and animals for production of proteins and amino acids. One of the components of chlorophyll, the plant pigment
http://www.ehow.com/facts_5869687_do-plants-animal...
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to make proteins and amino acids
http://wiki.answers.com/Q/Why_is_nitrogen_needed_b...
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DNA and RNA are polymers formed from chains of subunits called nucleotides, while proteins are polymers formed from chains of amino acids. Proteins and nucleic acids both contain
http://www.ehow.com/facts_7460663_nitrogen-used-an...
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to live.
http://wiki.answers.com/Q/Why_do_animals_and_plant...
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