| A | B |
|---|
| weathering | over time water freezes inside cracks in a rock and thus causes the rock to break apart |
| erosion | deforestation causes large amounts of loose soil to wash away during storms |
| biome | communities of living organisms adapted to live in a particular place |
| desertification | over time a lush region become drier and drier |
| irrigation | transporting and/or redistributing water for agricultural purposes |
| rain shadow | area on the side of a mountain chain that gets little water |
| The Gulf Stream | warm water current that runs up along the U.S. East Coast. |
| condensation | water vapor cools, thickens, and is pulled down by gravity |
| monsoons | winds that bring wet or dry weather during certain seasons |
| la nina | lower than normal water temperatures in the Pacific lead to dry conditions in the Mid-Western U.S. |
| el nino | warmer water temperatures in the Pacific lead to wetter conditions in the Mid-Western U.S |
| arctic circle | northern line of latitute beyond which there is only cold and ice |
| delta | roughly triangular-shaped area where sediments from rivers are deposited |
| physcial map | map that shows land features such as mountains, rivers, lakes, deserts, etc. |
| political map | map that shows cities, countries, and man-made boundaries |
| orographic effect | explains the phenomenon of the rain shadow |
