GLOBAL STYSTEMS

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Across
  1. 5. Destruction of forests to clear land for other uses
  2. 6. The process in which plants incorporate carbon into living things
  3. 7. What we breathe out
  4. 8. Burning fossil fuels release ___________
  5. 9. The process in which the sun takes up water
  6. 11. It is an important element in protein
  7. 15. A continuous circulation of water Earth
  8. 16. Periods between glaciations
  9. 18. All living things on earth
  10. 19. Formed from the breakdown of organic matter
  11. 20. Fuels that contain the carbon of plants and animals that were preserved millions of years ago
  12. 21. Oceans, seas, lakes, ponds, rivers are all part of Earth's ______________
  13. 23. Naturally replenished
  14. 26. layers of rocks/soil that don't reach above freezing point, have a temperature known as ______________
Down
  1. 1. The general long term average weather
  2. 2. Causes drought in Australia and Indonesia
  3. 3. The warming of Earth caused by greenhouse gases
  4. 4. Form of light we can feel as heat
  5. 7. The process in which water vapor is turned into rain
  6. 10. Interaction between all living things and the physical environment
  7. 12. New renewable type of fuel
  8. 13. The layer of gases on Earth
  9. 14. The process in which carbon is recycled to enable life on earth
  10. 16. Masses of glacial land ice are known as ___________
  11. 17. Earth's __________ is made up of the crust and upper mantle
  12. 22. Radios, X-rays, Televisions and microwaves all have sources of ___________
  13. 24. The conditions in the atmosphere
  14. 25. type of radiation that reflects back into space as heat