Cycles In Nature

6. The type of gas plants release into the atmosphere during photosynthesis.
8. A type of bacteria that changes nitrogen in the soil to a form plants can use.
10. The cycle that involves the movement of nitrogen through the atmosphere, soil and living things.
11. Process by which animals and plants release carbon dioxide by breaking down sugar for energy.
12. Process where plants make their own.

1. Gas that plants take in for photosynthesis.
2. The form on Nitrogen found in the atmosphere.
3. The process where nitrogen in the soil is converted back into nitrogen gas.
4. The cycle that involves the movement of carbon between the atmosphere, living organisms, and the Earth.
5. Organisms that can produce their own food using light, water, carbon dioxide or other chemicals.
7. The gas that makes up about 78% of Earth's atmosphere.
9. Type of organism that relies on plants or other animals for energy.