| 1 | Storm-water runoff? | |
| 2 | Phosphorus pollution comes from multiple sources, including fertilizer and manure that enter the water through runoff. | |
| 3 | But over the last 30 years "there has been an increase in runoff, " he said in an email exchange. | |
| 4 | Agricultural and sewage runoff frequently contaminates the river and treatment methods are inadequate to handle the pollution. | |
| 5 | Thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff. |
Copyright © Purple Culture Co., Ltd. 2001 - 2026. All right reserved.
