Ecological invasion refers to the process that people consciously or unconsciously bring some organisms into areas suitable for their habitat and reproduction, so that the biological population continues to expand and the distribution area continues to expand stably, thus endangering local production and life and changing local ecological environment.
According to the above definition, which of the followings belongs to ecological invasion?
A large area of radionuclide leakage occurred in a certain place, which made a plant mutate, and its reproductive ability was super strong, gradually replacing other plants in the area