Water and Carbon Cycle

3. Plants, animals and microorganism break down food containing carbon in this process
7. The movement of water from the oceans to the atmosphere and back to the oceans
8. Hydrocarbons formed from the remains of dead plants and animals
11. Processes that release carbon into the atmosphere
15. The loss of water from plants
17. How many key stages are in the carbon cycle
20. Burning of fossil fuels, largest unnatural carbon source
21. Rain hits the ground and soaks through the soil and the rocks

1. The changing of water in the form of a liquid to water in the form of a gas
2. Too much carbon dioxide in the oceans can lower the pH of the water making it more
4. Most of the carbon that is removed from the atmosphere is absorbed by the ______, largest carbon sink
5. When dead organisms break down into smaller parts, releasing carbon into the ground and atmosphere
6. The process that allows plants to uptake carbon dioxide and make food
9. Store carbon for a long period of time
10. Supplies wells and springs
12. All living things contain this common element
13. Takes place when a gas changes to liquid
14. Permanent removal of trees, human activity that affect the carbon cycle
16. Water droplets held within clouds become too heavy and water falls back to Earth
18. Water can exist in 3 states of matter: solid, gas and
19. The draining away of water from an area of land