How have Humans modified the environment to make it more fitting for themselves

Do you just need a random example? If so one way we have altered is we have duh through mountains and laid down rail roads, also just regular road placements disturbed many ecosystems and living spaces for animals of variety. And last but not least the use of paper involves cutting down trees that birds and squirrels live in that disrupts the ecosystem.

By clearing environments that we couldn't live in, and building man-made rivers, lakes and forests. Animals have a bigger ability to adapt, but humans can't do that as easily so we have a higher intelligence then the animals in order to make our own environment.