| A | B |
|---|
| arroyo | small river in a dry area |
| biome | community of plants & animals in one area |
| climate | long-term pattern of weather |
| environments | the conditions under which animals and plants can live |
| evaporates | turns from water into gas |
| mouth | where a river empties into the sea |
| percent | out of a hundred |
| source | the beginning of a river |
| spring | a small stream of water coming out of the ground |
| tributary | a small river flowing into a larger river |
| aimless | without a goal |
| hesitate | to wait for a few seconds |
| convention | a meeting of people with a shared interest |
| pitiless | without mercy or compassion |
| flexible | bendable, changeable |
| lure | to tempt, attract, or lead into a trap |
