Hello guys, I have been confused with the usage of 'cycle' and 'cycling' for quite a long time. What is the difference between them? Follow are 4 sentences extracted from an academic paper published in Nature. These sentences must have been edited by the native English editors of Nature, so there should be no grammar errors. 1, "Synthesizing earlier studies, we find that the mobilization and deposition of agricultural soils can significantly alter nutrient and carbon cycling" 2, "The cycling of carbon, nitrogen and phosphorus are strongly interrelated." 3, "Beginning with the pioneering work of Stallard, scientists have become increasingly aware that lateral fluxes induced by soil erosion are of key importance in the global carbon cycle." 4, "Understanding erosional effects on the carbon cycle requires consideration of all three phases" I am a grad student concerning on climate change, so I would use the word 'cycle' quite often. That is why I am so confused! Kindly could you anybody help clarify the differences and tell me how use them correctly? thanks a lot!