Depends on how much you drink hope this helps
The body contains about a trillion cells
Urinary and digestive system, because I just learned that like seconds ago.
Species A and B because there are no two specific species that do this
The most common form of entry of the phosphorus is by human use of the fertilizers which is released into the groundwater.
Most of the fertilizers being used in agriculture contains nitrogen and phosphorus which is carried to the aquatic ecosystem through surface runoff. When the tropical rainforest are cut down by humans and fertilizers are being used in large amounts the nutrients stored in plants or rocks are washed by the heavy rains and they reach groundwater or other water bodies. Therefore, the humans alter the natural phosphorus cycle majorly in several mentioned ways.
