Humans can disrupt the ecosystem by for an example drilling under the ground so you can find oil well that is bad because it increases having more earthquakes.
A the southwest isnt an area that is fully populated yet due to the land layout and the weather and lack of jobs
i hope this is the answer you are looking for.
I believe the answer you're looking for is C. Rustbelt states
Hope this helps!
Answer:
D
Explanation:
I learned it uhhhhhhhhhhhhhhhhhhhhhhhhhh