Question

How are the carbon, nitrogen, and oxygen cycles similar?
a.
They are all biogeochemical cycles.
b.
They all involve an interaction between living and nonliving elements.
c.
They are all part of the Earth system.
d.
All of the above.

Answer 1

@kennybm

Answer 2

@ARMYRANGERS

Answer 3

All of the above as they are all biogeological cycles, it DOES involve both living and non-living elements and its all a part of the Earth system, what does the answer say? :)

Answer 4

Thank You (: