| A | B |
|---|
| fertilizers | chemicals and other substances added to soil to increase plant growth |
| water pollution | the addition of any substance that has a negative effect on the water or the living things that depend on the water |
| floodplain | a broad flat valley created by and through which a river flows |
| urbanization | changing a natural or rural (farming / agriculture ) area into an urban area |
| erosion | the process by which fragments of soil and rock are broken off from the ground surface and carried away |
| pesticides | chemicals that kill pests |
| herbicides | chemicals that kill plants |
| fungicides | chemicals that kill or prevent the growth of fungus |
| watershed | The land area that drains into a river or other body of water |
| runoff | water that flows over the ground surface rather than soaking into the ground |
| tributary | a smaller creek or river that feeds into larger creek or river |
| deposition | the process by which soil fragments of rock are deposited in a new location |
| sediments | the particles of rock and soil that are moved by water or wind |
| levees | An embankment ( a bank of soil, gravel or rock) raised to prevent a river from overflowing |
| creek channelization | to reroute and pour concrete onto creek bed and banks |
| acid rain | rain that is more acidic than normal, caused by releasing air pollutants, like sulfur dioxide and nitrogen oxide into the atmosphere |
| point source pollution | a specific source of pollution that can be identified, such as a pipe |
| non-point source pollution | a widely spread source of pollution that is difficult to link to a specific point of origin |
| nitrates | nutrient needed by living things.Used in the making of proteins. |
| phosphates | a nutrient needed by living things. High levels in water can cause excessive algea growth. |
| pH | a measure of how reactive a substance is. |
| turbidity | a measure of the clarity of the water |
| dissolved oxygen | oxygen that is dissolved in water |
| thermal pollution | pollution caused by discharging warm or hot water into bodies of water |
