Lauren Natural World

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Across
  1. 2. resources formed from the remains of plants
  2. 4. wind that causes dry seasons
  3. 7. resources earth replaces naturally
  4. 10. where animals and plants live
  5. 13. coldest climate zone
  6. 14. large streams of surface water
  7. 16. area of tall grasses and scattered trees
  8. 19. the spread of desert like conditions
Down
  1. 1. frozen layers of soil
  2. 3. animals and plants that depend on others
  3. 5. very dry climate type
  4. 6. material in nature that people value
  5. 8. average weather conditions over a long period
  6. 9. semidry grasslands or prairies
  7. 11. decayed plant of animal matter
  8. 12. the place where two air masses meet
  9. 15. animals that die out
  10. 17. the short-term changes in the air
  11. 18. coldest of the biomes
  12. 20. really hot fire ball