| A | B |
|---|
| MECHANICAL WEATHERING | Much of the weathered debris in deserts is a result of |
| WATER | what is the main cause of erosion in the desert |
| RUST-COLORED TINT IN THE DESERT | due to iron-bearing silicate materials |
| EPHEMERAL STREAMS | streams that carry water only after it rains and dries up quickly |
| BASIN AND RANGE | valley and mountain |
| ALLUVIAL FAN | sediment that is carried down mountain canyons and deposited on the gentle slopes at the base of mountains |
| PLAYA LAKE | formed when an alluvial fan receives abundant rainfall |
| RUNNING WATER | the source of most desert erosion |
| PLAYA | flat lakebed that was formerly a playa lake |
| NILE RIVER | example of a permanent stream that crosses an arid region |
