| A | B |
| water cycle | the moverment of water between the atmosphere and the earth's surface |
| evaporation | changing form a liquid to a gas |
| condensation | changing from a gas to a liquid |
| precipitation | moisture that falls to the earth from the atmosphere |
| transpiration | process in which water moves from the inside of leaves to the outside |
| infiltration | the seepage of water into soil or rock |
| sublimation | a change directly from the solid to the gaseous state without becoming liquid |
| groundwater | water that sinks into the ground |
| drainage basin or watershed | a land area that drains into a river swamp, march, ocean |
| runoff | water that runs over the earth's surface and flows into streams |
| tributary | river that joins another river of equal or greater size |
| nitrogen and phosphates | two groups of nutriants that promote plant growth in streams and lakes |
| point source polution | you can point to the source of polution, such as a pipe or smokestack |
| non point source polution | polution carried to body of water or ground water by run off |
| One of the saltiest parts of the world's ocean | Meidterranean Sea |