| A | B |
|---|
| The Phosphorus cycle begins with | rocks eroding. |
| When rocks erode Phosphorus gathers in | soil |
| In the soil, phosphorus can be absorbed by | plants |
| Excess phosphorus collects with | fertilizer and detergent runoff |
| Runoff from fertilizers and excess phosphorus in the soil gathers within | oceans, streams, or lakes |
| In oceans, streams or lakes phosphorus forms | phosphate salts |
| Over time, phosphate salts will become | rocks that will erode. |
