Compare the nitrogen, carbon, and oxygen cycles

The main difference is the way how the three of those cycles are performed.
For example, as nitrogen is abundant then it cannot be used by plants or animals in its gas form. The carbon cycle does not need an especial process like the one of the nitrogen. Plants can take carbon dioxide and use it for photosynthesis. All three of these cycles are found in soil. oxygen cycles recycles the oxygen. all these cycles are very important to every oragnism.

Hope the answer is b