A student has two flasks of growing algae. to one flask he adds some phosphorus, while he leaves the other flask alone. At the end of the day both populations are stable, but the phosphorus-containing flask has 10 times more algae as the phosphorus increased the carrying capacity of the environment.
Too much phosphorus can promote the growth of algae and large aquatic plants, resulting in lower levels of dissolved oxygen- a process known as eutrophication. High phosphorus levels can also cause algae blooms, which can produce algal toxins that are harmful to human and animal health.
Phosphorus (P) is a necessary element for plant and animal growth, as well as for profitable crop and livestock production. It can also boost surface water biological productivity by hastening eutrophication, the natural aging of lakes and streams caused by nutrient enrichment.
Phosphorus, like nitrogen, is an essential nutrient for all life. Phosphate (PO4) is the most common form of phosphorus used by biological organisms, and it is important in the formation of DNA, cellular energy, and cell membranes (and plant cell walls). Commercial fertilizers frequently contain phosphorus.
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