Across
- 5. a small rapidly twisting funnel of air that touches the ground.
- 7. planting the same type of crop over and over can cause...
- 9. the short term changes in the air for a given place and time.
- 10. warm with high amounts of rain year-round.
- 11. causes prevailing winds to curve east to west.
- 12. Freezing cold with snow and ice, very little precipitation.
- 16. a frozen layer of soil that never thaws.
- 18. entire species of animals that have died out.
- 19. energy obtained by the splitting of atoms.
- 21. is heavy and falls to the Earths surface.
Down
- 1. that is created by water power.
- 2. cloudy, mild summers and cool, rainy winters with a strong ocean influence.
- 3. means grassland
- 4. warm water current that flows north along the U.S. each coast.
- 6. seasonal winds that bring either heavy rain or very dry conditions.
- 8. any material in nature that people use and value
- 13. rises.
- 14. sunny and dry, with less than 10 inches of rain per year.
- 15. place where animals and plants live is their...
- 17. the clearing of large areas of trees.
- 20. a regions average weather conditions.