Answer:Nitrogen is essential for organisms primarily because it plays a crucial role in the formation of amino acids, which are the building blocks of proteins. Proteins are vital for various biological functions, including enzyme activity, structural support, and cellular processes. Without nitrogen, the synthesis of proteins would be impossible, and life as we know it could not exist.
In addition to its role in proteins, nitrogen is also a key component of nucleic acids like DNA and RNA, which carry genetic information and are critical for the replication and functioning of cells. Nitrogen is also part of essential compounds such as ATP (adenosine triphosphate), which stores and transfers energy within cells.
Plants obtain nitrogen from the soil, and animals get it by consuming plants or other animals. Nitrogen cycles through ecosystems, and its availability is crucial for maintaining the balance of life on Earth.
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