| A | B |
|---|
| Water found in lakes, rivers, and streams | Surface water |
| Area of land from which water flows into a river | Watershed |
| Artificial lake created by building a dam | Reservoir |
| Underground rock formations that hold water | Aquifer |
| Area of land through which water percolates to be stored as ground water | Recharge zone |
| Water pollution that washed into storm sewers | Nonpoint pollution |
| Removing salt from salt water to make fresh water | Desalinization |
| Bacterium, virus, or parasitic worm that cause disease | Pathogen |
| Process by which increasing amounts of toxins are stored in organisms' bodies through the food chain | Bioaccumulation |
| Process by which nutrients increase in a lake, while decreasing the amount of oxygen levels | Eutrophication |
