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Nitrogen
A chemical element, denoted by N, which is a vital component of amino acids and nucleic acids.
Ammonium
A positively charged ion (NH4+) formed by the addition of a hydrogen ion to ammonia, important in nitrogen metabolism.
Nitrate
A polyatomic ion with the chemical formula NO3-, commonly found in fertilizers and an essential nutrient for plant growth.
Plants
Multicellular organisms that typically produce their own food through photosynthesis and have cell walls made of cellulose.
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