The Phosphorus Cycle
Phosphorus is one of the major components in DNA.
Phosphorus unlike most other substance cycles is stored mostly in rocks not in the atmosphere.
Humans mess up this cycle by adding a lot of extra phosphorus where there was originally only a little. This causes extra growth of microorganisms that turn the water into a soupy mixture of disease.
Phosphorus is added back into the soil when things die and decay.

Hello my name is Billy Peck I'm 17 years old and have been wrestling every year of high school. I have wanted to be a Marine Biologist since about seventh grade.  I am taking Ap Biology to get a more in depth understanding of Biology.  I hope that this course is challenging and fun