Hello.
The answer is
A. increased air temperatures
Farming doesnt effect the temputure.
it wouldnt be B becasue farming could increase habbit loss.
Its not C becasue that happends all the time in the ground its natural. its where wind and water is combined so there is a lot of that with farming.
Its not D bc some firtileers can cause harmful death to animals.
Have a nice day
