Across
- 3. usually get less than 25 cm of rain
- 6. average temp is 25 C
- 7. layer of permanently frozen ground
- 9. also called tropical grassland
- 10. cold desert no trees and long summer days
Down
- 1. when precipitation ranges from about 70 to 150 cm anually
- 2. large group of ecosystem that share the same climate
- 4. also called coniferous forest, south of tundra
- 5. large communities covered with rich soil
- 8. degrees with north and south of the equator