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".
Answer: Decrease
Explanation: Because their foot is being used more.
I think that's what it said.
Answer:
it increases oxygen levels and decrease carbon dioxide levels
The abrupt breaking of rocks or explosions, fro example an earthquake or Nuclear bomb.