1. What is phosphorus

2. What do we need phosphorus for? It natural use Formation of bone/ teeth ATP (adenosine triphosphate) Human uses Fertilizers & detergent matches White phosphorus

3. Too much of a good thing? Natural To much phosphorus in people = kidney damage and osteoporosis A lack of phosphorus limits algae growth. High phosphorus fertilizers = ?

4. Artificial eutrophication

5. Weathering versus geologic uplift Weathering: Breakdown of rock into smaller pieces –Chemical weathering: acid rain, Lichens –Physical weathering: wind, rain, freezing,

6. Geologic uplift The process of building mountains. The earths crust folds up exposing phosphorus rock

7. Parts of the Phosphorus Cycle Phosphorus Flows: The amount of phosphorus that moves in or out of that source (circles)

9. Parts of the Phosphorus Cycle Phosphorus Flows: The amount of phosphorus that moves in or out of that source (circles) Stored Phosphorus: amount of millions of tonnes phosphorus stored in that source (squares)

11. Parts of the Phosphorus Cycle Phosphorus Flows: The amount of phosphorus that moves in or out of that source (circles) Stored Phosphorus: amount of millions of tonnes phosphorus stored in that source (squares) Moving Phosphorus: Shows where the phosphorus is going (arrows)