Nitrogen Cycle-Tyler Parris

Nitrogen Cycle Picture

Nitrogen Cycle: a continuous series of natural processes by which nitrogen passes successively from air to soil to organisms and back to air or soil involving principally nitrogen fixation, nitrification, decay, and denitrification.


Step 1 (Nitrogen Fixation):Conversion of atmospheric NO2 into forms useful to plants by lighting, bacteria, and cyanobacteria.

Step 2 (Nitrification): Process of converting ammonia to nitrite or nitrate.

Step 3 (Assimilation): Plant roots absorb new form of nitrogen

Step 4 (Ammonifcation):Conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

Step 5 (Denitrification): Bacteria turns the decomposed matter back into N2O, which is released into  atmosphere; repeat cycle.

Reflection

-I learned that Animals get their nitrogen needs by eating plants or eating animals that eat plants.

-This can be used outside of biology to see one of the cycle's that keeps the earth going.

Nitrogen Cycle Video