1. THE PHOSPHORUS CYCLE

2. The phosphorus cycle
Phosphorus molecules are in the cells of all living things.
Plants get their phosphorus from soil and water.
Where do you think animals and humans
get their phosphorus from?___________ Wh

3. Phosphorus Cycle
The Phosphorus Cycle is slow as phosphorus moves from the environment to organisms to environment.
The Phosphorus cycle does not include the atmosphere because phosphorus
rarely occurs as a gas.

4. Phosphorus Cycle Phosphorus moves through the environment:
EROSION FROM ROCKS WASHES PHOSPHORUS INTO RIVERS AND STREAMS
> IN WATER, PHOSPHORUS UNITES WITH OXYGEN AND FORMS PHOSPHATES
> PLANTS GROWING IN WATER AND ALONG BODIES OF WATER TAKE UP PHOSPHATES
> PLANTS ARE CONSUMED BY ANIMALS AND HUMANS
> PHOSPHORUS IS RETURNED TO SOIL IN ANIMAL AND HUMAN WASTE.

5. Phosphorus Cycle
The last stage of the cycle will occur when the phosphorus that enters the water is then concentrated in marine sediment.

6. Phosphorus Cycle