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Answer:

Too much phosphorus can cause increased growth of algae and large aquatic plants, which can result in decreased levels of dissolved oxygen– a process called eutrophication. High levels of phosphorus can also lead to algae blooms that produce algal toxins which can be harmful to human and animal health

An element with the atomic number 15 that is highly reactive is Phosphorus (P). It majorly plays role in the development of teeth and bones.

It is also essential for protein assembly and energy generation for the body.

  • The abundance of phosphorus in water bodies will result in algal bloom and large aquatic plants.

  • An increase in the number of algae and plants will result in a decrease in the biological oxygen demand in the water.

  • The dissolved oxygen for other aquatic animals will not be adequate and the other aquatic animals will die.

  • Algal bloom will result in toxicity of water which will affect the humans and animals consuming it.

To learn more about eutrophication and phosphorus follow the given link:

https://brainly.com/question/16652910