| A | B |
|---|
| meander | a curve in a river |
| delta | the mouth of a river where sediment is deposited |
| macroinvertebrate | these insects are used as a water quality indicator |
| permeability | the ability to transmit fluids through the soil or sand |
| mountain sand | this sand has sharp edges and it has not been carried eroded very far from the original source |
| beach sand | This sand is rounded and has traveled far from its original source. |
| dune sand | This sand is frosted, pitted and subrounded. |
| weathering | the breakdown of rock through chemical or physical processes |
| erosion | The process by which material weathered from rocks is transported by wind, water, ice |
| run off | the water drains off the land |
| porosity | space between soil or sand grains |
