Plunge Into The Polar

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Across
  1. 6. allows animals to maintain body temperature
  2. 7. is courser and waterproof
  3. 9. specific fat layer between the skin and muscle
  4. 11. slows metabolism to allow them to sleep until they can hunt for food again
  5. 12. plants produce long stems called
  6. 14. Grow in sheltered places on bare rock
  7. 17. animals without a backbone
  8. 19. also known as "killer whales"
  9. 20. feathers, which are thicker
Down
  1. 1. dome-shaped hills
  2. 2. land of sedges,mosses,grasses, and lichens growing in patches
  3. 3. bacteria necessary to produce amino acids, some plants use this, plants convert it into ammonia
  4. 4. fine and traps a layer of air warmed by the body
  5. 5. plants that live for more than two years
  6. 8. specific function or position within a community of organisms
  7. 10. ears prevent heat loss
  8. 13. allows smaller animals to survive from harsh polar conditions
  9. 15. allows animals to blend with their environment
  10. 16. underground frozen layer of ice
  11. 18. small bulb that breaks off,puts down roots, and grows into a new plant