Answer:
I'm sorry, but I don't see an equation in your question to provide a specific answer. However, I can answer your general question.
Nitrogen has one more proton than Carbon because it has one more positively charged particle (proton) in its nucleus. This difference in the number of protons determines the atomic number and identity of the element.
Protons can only come from the nucleus of another atom, through a nuclear reaction. In nature, nitrogen is usually created by nuclear fusion in stars, where lighter elements combine under high pressure and temperature to form heavier elements.
Regarding the second part of your question, without the specific equation you are referring to, I cannot determine the type of reaction depicted. There are many types of chemical reactions, including synthesis, decomposition, combustion, acid-base, and redox reactions, among others.