Earth Shperes and Cycles; Jordan Fleer

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Across
  1. 3. is the hard rock on and just below earths surface
  2. 4. the return of water to earths surface
  3. 5. all of the rock below earths surface
  4. 8. a spongelike formation of rock, sand or gravel that holds water
  5. 9. the conversion of nitrogen gas into ammonia
  6. 13. the release of water vapor by plants through their leaves
  7. 14. a process where plants use sunlight to convert CO2 and water into food
  8. 16. the thin layer of gasses that surrounds earth
Down
  1. 1. a process by which organisms use O to make chemical energy into CO2 and water
  2. 2. the movement of and accumilation of eroded soil
  3. 6. the introduction of phosphorus and nitrogen leading to overgrowth of algae and other producers
  4. 7. one of the rigid layers of the lithosphere
  5. 10. Loop a cycle of events that causes a reaction
  6. 11. all of the water on our earth including oceans
  7. 12. the earth and all of its organisms and environments
  8. 15. a layer of very hot but mostly solid rock beneath earths crust