Nitrogen cycle

3. flashes in the sky, causes nitrogen to come up from the ground into atmosphere
4. the process where microscopic organisms like bacteria or other types of decomposing organisms
7. the process of absorption of vitamins, minerals, and other chemicals from food as part of the nutrition of an organism
8. this process breaks down fixed nitrogen and returns unfixed di-nitrogen gas to the atmosphere
10. the process in which unfixed di-nitrogen gas in the atmosphere is changed to "fixed" biologically available nitrogen compounds like nitrate and ammonium

1. a substance that an organism needs to survive but can not make on its own
2. the process of combining, mixing, or filling with nitrogen or one of its compounds
5. organisms that break down dead plants and animals and return important denitrifying fixed nitrogen, to the soil
6. that breaks apart fixed nitrogen and return unfixed di-nitrogen gas to the atmosphere
9. the movement of nitrogen from the atmosphere into the soil and water, through the food chain, and back to the atmosphere