Science

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Across
  1. 2. the amount of salt dissolved in water
  2. 5. regions along coastlines where streams or rivers flow into a body of salt water
  3. 6. biome is cold, dry, and treeless
  4. 7. a geographical area on earth that contains ecosystems with similar biotic and abiotic factors
  5. 10. biome that receives very little rain
  6. 11. regions of earths surface between the tropics and the polar circles
  7. 12. process of one ecological community gradually changing into another
  8. 13. biome where grasses are dominant plants
  9. 15. Is an underwater structure made from outside skeletons of tiny, soft bodied creatures called coral
Down
  1. 1. the first species that colonize a new or undisturbed land
  2. 3. is the ocean shore between the lowest low tide and the highest high tide
  3. 4. stable community that no longer goes through major ecological changes
  4. 8. the process of a body of water becoming nutrient rich
  5. 9. aquatic ecosystems that have a thin layer of water covering the surface
  6. 14. a forest biome consisting mostly of cone-bearing evergreen trees