| A | B |
|---|
| erosion | soil and sediment moved to another spot |
| water cycle | movement of water in earth atmosphere |
| water shed | drainage basin |
| tributary | stream that flows into another body of water |
| load | materials carried in water |
| deposition | material dropped by water |
| Delta | deposit left by river |
| alluvival fan | deposit on dry land |
| aquifer | rock layer that stores water |
| permeability | the ability of water to flow through |
| porosity | open spaces in rock material |
| point source pollution | pollution from one site |
| sewage | waste material in water |
| percolation | movement of water through pores |
| meanders | bends in river channels |
| dissolved oxygen | oxygen in the water |
| pH | acid/base balance of the water |
| nitrate | naturally occuring compounds of nitrogen and oxygen |
| buffer | to soften something |
| turbidity | concerntration of particles |
| water quality | chemical and biological balance in water |
| desalination | removal of salt |
| plankton | drifters in icean surface |
| nekton | organisms that swim in ocean |
| benthos | organisms that live on ocean floor |
| estuary | fresh and salt water mix |
