Why is phosphorous important to living things?
Without phosphorous, we wouldn't be alive.
Without phosphorous, we wouldn't be alive. ATP contains phosphorous and ATP stores energy in the cell and powers cellular processes. Thus, phosphorous is crucial to living organisms because ATP is crucial.
Phosphorous is also important because it makes up our DNA. Phosphate is part of the so-called ladder legs which Adenine, Thymine, Guanine, and Cytosine bind to (see image below). It holds this same job in RNA.
Bones and teeth are made up of phosphorus also. Phosphate makes up 50% of bone (see here). Some enzymes contain phosphorous and it is used in repair and growth. Hemoglobin, which transports oxygen in our blood, requires phosphorous. Thus, this element is important for living organisms for a multitude of reasons.
Check out the answer for this question from the Biology section.