Environment systems crossword puzzle

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Across
  1. 2. top layer of the earth
  2. 8. under the surface
  3. 9. appears at the thermosphere
  4. 11. energy in the form of glucose
  5. 13. living things that depend on the same resources
  6. 15. The total amount of water on the Earth
  7. 16. Layer of gases surrounding a planet
  8. 17. uppermost layer of our atmosphere
  9. 19. frozen areas
  10. 21. different types of land
Down
  1. 1. center of the earth
  2. 3. Temperature from -86.5°C to 1200°C
  3. 4. big blocks of floating ice
  4. 5. Where all of life on Earth resides
  5. 6. Frozen water part of the Earth
  6. 7. middle layer of earth
  7. 10. Lakes, rivers, oceans, and clouds
  8. 12. earth’s lowest layer of our atmosphere
  9. 14. Where meteors burn
  10. 18. extends from the top of the troposphere
  11. 20. a planet