In biology, the biotic factors pertain to the living components of Earth while the abiotic factors are those non-living chemicals and physical factors. The only choice that is not an interaction between biotic and abiotic factors is the third choice, "C. male elk fighting over a female".
Carbon is found in the atmosphere mostly as carbon dioxide.
If you look at this what do you see the earth and when there is the full moon what do you see.
