Cycles in Nature

4. refers to the variety of species in an area
5. the change of a substance from a liquid to a gas
8. the breakdown of substances into simpler molecular substances
10. the replacement of one type of community by another at a single location over a period of time
13. rainfall seeps underground through a process where water travels downwards through the tiny spaces between rocks and soil particles
15. the movement of water between the ocean, atmosphere, land, and living things
16. the movement of nitrogen between the environment and living things
17. the change of state from a gas to a liquid
18. the burning of a substance

1. The process of producing energy in the cell from oxygen and glucose; releases carbon dioxide and water
2. the process where rock is slowly transformed into soil
3. the exchange of carbon between the environment and living things
6. the process of changing nitrogen gas into forms that plants can use
7. in the early stages of succession, an area may be dominated by certain plants (climax species) that are well adapted, slow growing
9. A species that colonizes an uninhabited area and that starts a process of succession
11. A series of stages that a community goes through after being destroyed by a natural disaster (fire, flood) to return to its original being
12. is the process by which water on the ground surface enters the soil
13. process where plants use carbon dioxide and sunlight from the air to make sugars
14. any form of water that falls to the Earth's surface from the clouds