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CH 17
| Term | Definition |
|---|---|
| alluvial plain | an area built up by rich, fertile soil left by a river |
| oasis | a fertile area that rises in a desert wherever water is regularly available |
| wadis | a dry riverbed that fills with water when rare rains fall in a desert |
| semiarid | having low temperatures and cooler nights than hot,dry desert |
| vary | to show differences between things |
| polytheism | the belief in more than one god |
| millennium | a period of a thousands years |
| monotheism | the belief in one god |
| covenant | an agreement with a god |
| prophet | messenger of god |
| expand | to spread out;to grow larger |
| collapse | a sudden failure,breakdown, or ruin |
| hydropolitics | the politics surrounding water access and usage rights |
| fossil water | water that fell as rain thousands of years ago and is now trepped deep below the ground |
| widespread | commonly occurring |