| Question |
 |
|
| Answer |
 |
|
| hydroelectricity |
using water to produce electricity |
| diversify |
to add variety |
| El Nino |
warm ocean current that flows along the western coast of South America; affects weather patterns |
| elevation |
height of land above sea level |
| plateau |
large, raised area of mostly level land |
| isthmus |
narrow strip of land that has water on both sides; joins two larger bodies of land |
| coral |
rock-like substance formed of skeletons of tiny sea animals |
| pampas |
regions of plains in Argentina, Uruguay, and Brazil |
| tributary |
river or stream that flows into a larger river |