| A | B |
|---|
| What river helped carve out the Grand Canyon | Colorado River |
| Why is the Grand Canyon still changing | erosion still is happening |
| erosion is caused by | water, glaciers, and wind |
| Why was the Grand Canyon made into a national park | President Roosevelt wanted to preserve its beauty |
| What can you do at this park | walk along the egde, listen to park rangers, and hike |
| climate in the SouthWest | is varied with different temperatures and precipitation |
| arid, , hot and humid, humid and windy | are the climates found in the Southwest |
| an area athat get less that 10 inches of rain | is a desert |
| saguaros are adapted to little rainfall by | having shallow roots, ribbed trunk, and can store water for long periods |
| Saguaros help wildlife by | providing shelter for many animals |
| a nonrenewable resource | cannot be replaced in nature |
| oil | is a nonrenewable resource |
| technology in the SW includes | manufacturing, computers, space industry |
| New Mexico | has laboratories that develop military resources |
| Very Large Array | in one of the world's largest radio observatories |
