A1.2.5.1 The Phosphorus Cycle
The Phosphorus cycle is slow moving in comparison to the water or carbon cycles.
Phosphorus enters the environment from:
- Rocks, which erode over time and gradually release it.
- Decomposition of plant and animal matter.
It is a common occurrence for Phosphorus to be washed into water from erosion and leaching. Water plants use the Phosphorus as a fertiliser.
Phosphorus enters the food chain through animals eating plants (herbivores) or though other animals eating them (carnivores).
Source: http://vincejtremante.tripod.com/cycles/phosphours.htm