Why are most fertilizers rich in nitrogen and phosphorus?
They are vital for plants.
Nitrogen and phosphorus are important ions for plants to have.
Nitrogen contributes to the buildup of amino acids, which then combine to make proteins, and are important nutrients for the plant to grow and have green leaves.
Phosphorus is an element that contributes to the building blocks of DNA molecules, especially in the phosphate groups of it. Also, phosphate groups are important in
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