2A- Celayna Rivera

12345678910111213141516171819202122
Across
  1. 5. where organisms use oxygen to generate energy from nutrients and produce carbon as waste.
  2. 6. the process of burning something.
  3. 9. this is a bacteria that lives in the roots of certain plants.
  4. 10. what determines the type of precipitation.
  5. 12. rain, sleet, snow, hail, or freezing rain are all forms of _______.
  6. 15. largest storage reservoir of carbon on earth.
  7. 18. where water vapor is changed back into liquid water.
  8. 19. the water on earth is relatively _________.
  9. 21. is condensation near the ground.
  10. 22. how nitrogen enters the atmosphere.
Down
  1. 1. the process which water is converted from it's liquid state to the gaseous state.
  2. 2. a purifying process
  3. 3. how carbon is removed from the atmosphere.
  4. 4. all parts of the ecosystem need an adequate supply of ______.
  5. 6. this is required for precipitation.
  6. 7. bacteria transforms soil ammonia into nitrates.
  7. 8. nitrogen is very ________ with other elements.
  8. 11. when water flows along the surface into lakes, rivers, and streams.
  9. 13. acts as a part of the earth's thermostat.
  10. 14. another word for water cycle.
  11. 16. makes up 78% of the earth's atmosphere.
  12. 17. how do animals get nitrogen.
  13. 20. where liquid fresh water is stored underground.