What do the carbon, oxygen, and nitrogen cycles all have in common? a. they all include an exchange of gases with the atmosphere. b. none of the cycles are biogeochemical cycles. c. they are all byproducts of photosynthesis. d. they all sustain life, but living organisms have no part in the cycle.

The right answer is: A

A biogeochemical cycle is the process of transport and cyclic transformation of a chemical element (like oxygen, carbon or azote) or a compound between the large reservoirs that are the geosphere, the atmosphere, the hydrosphere, in which the biosphere is found.
The three elements are able to exist in a gaseous form in the atmosphere to complete their respective natural cycle.

In the air and in the lower fre ah water