Explain how the carbon cycle and the nitrogen cycle are connected

 

All are linked by their common interaction as essential parts of the plant cycle.

Explanation:

The "Carbon Cycle", is most often discussed, because, of its impact on, and effects from atmospheric CO^2 content. The NITROGEN CYCLE is also mentioned frequently, because, of its major role in plant growth. Both nitrogen, and phosphorous are often added to crops as fertilizers; to enhance production of food. This impacts the nitrogen, and phosphorous "Natural Cycles," in much the same way that burning hydrocarbons impacts the carbon cycle.  Recognizing the inter-dependencies of the three cycles is also important when considering the possibility of making a change to any one of them.

Hope this helps. 

Except hold on to his or her beliefs even if there is no evidence for those beliefs.

Ibelieve the answer is c.