Pole to Pole

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Across
  1. 1. Produces significant oxygen amount
  2. 3. What animal lives in a Tundra environment?
  3. 5. The tropics hold 50% of the earths plants and?
  4. 6. This environment covers one third of earth's land surface
  5. 12. These animals migrate to different seas in search of food
  6. 14. Pacific, Atlantic, Southern, Artic and Indian are all what?
Down
  1. 1. Long summers changing the vegetation
  2. 2. This environment has all year round sun and warmth
  3. 4. Little animal life because pine needles are what?
  4. 7. Tropics are made up of dense and layered what?
  5. 8. This place is continuously dark for 4 months
  6. 9. Migration occurs in winter as trees lose leaves in winter and in search of warmth
  7. 10. All living things get what from the sun?
  8. 11. Sea ice thaws when?
  9. 13. What word can be used to describe a Tundra environment?