Hello there!
The answer is Mutation.
Hope This Helps You!
Good Luck :)
Im pretty sire the answer in inflammation, so A.
Biological dispersal is the act of movement of individuals from their birth site to a breeding site or from one breeding site to another. It is a phenomenon that contributes to gene flow and affects population genetics and species distribution. Also, it strongly affects population dynamics and induces changes on the ecosystem.
The answer is soil erosion