Answer:
Wind
Explanation:
Steel, coal and oil will all run out eventually
Natural selection doesn't favor traits that are somehow inherently superior. Instead, it favors traits that are beneficial (that is, help an organism survive and reproduce more effectively than its peers) in a specific environment. Traits that are helpful in one environment might actually be harmful in another.
(one again, I hope this helps ^^)
Introduced species can harm our planet because in some regions of the world we are not prepared for their type of species, which can all in all cause damage.