Water and Carbon Cycle

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Across
  1. 3. Plants, animals and microorganism break down food containing carbon in this process
  2. 7. The movement of water from the oceans to the atmosphere and back to the oceans
  3. 8. Hydrocarbons formed from the remains of dead plants and animals
  4. 11. Processes that release carbon into the atmosphere
  5. 15. The loss of water from plants
  6. 17. How many key stages are in the carbon cycle
  7. 20. Burning of fossil fuels, largest unnatural carbon source
  8. 21. Rain hits the ground and soaks through the soil and the rocks
Down
  1. 1. The changing of water in the form of a liquid to water in the form of a gas
  2. 2. Too much carbon dioxide in the oceans can lower the pH of the water making it more
  3. 4. Most of the carbon that is removed from the atmosphere is absorbed by the ______, largest carbon sink
  4. 5. When dead organisms break down into smaller parts, releasing carbon into the ground and atmosphere
  5. 6. The process that allows plants to uptake carbon dioxide and make food
  6. 9. Store carbon for a long period of time
  7. 10. Supplies wells and springs
  8. 12. All living things contain this common element
  9. 13. Takes place when a gas changes to liquid
  10. 14. Permanent removal of trees, human activity that affect the carbon cycle
  11. 16. Water droplets held within clouds become too heavy and water falls back to Earth
  12. 18. Water can exist in 3 states of matter: solid, gas and
  13. 19. The draining away of water from an area of land