What is one event that is common to carbon, nitrogen and phosphorous cycle?

biogeochemical cycles that release their respective element into the atmosphere. The carbon and nitrogen cycles work together and can often be referred to as the CNO cycle.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.