EOG Prep L-19 Cycling of Matter in Ecosystems

9. "plant sweat"; water vapor is released through tiny openings in plant leaves called stomata
10. the natural process that involves condensation, precipitation, sublimation, etc.
11. the process when bacteria and other organisms break down dead organisms to return carbon dioxide into the air and nutrients to the ground.
13. the storing of water above ground in areas like ponds, lakes, and reservoirs.
14. the cycle that involves denitrification and nitrogen fixation.

1. a natural process often performed by bacteria that converts nitrogen from the atmosphere into forms that are useful to a variety of organisms.
2. rain, sleet, snow, hail
3. water that collects below the earth's surface.
4. the process by which a gas loses energy, temperature drops, and changes to a liquid.
5. the movement of water downward through soil.
6. a process often performed by bacteria that takes nitrogen from nitrates and other compounds in the soil and releases nitrogen into the atmosphere.
7. this cycle moves carbon throughout the environment mostly through photosynthesis and cellular respiration.
8. water that flows across land without infiltrating into the soil.
12. the process in which a liquid gains energy, temperature rises and becomes a gas.