Fact 1: Erosion of soil has a negative impact on the environment. Fact 2: Dirt is really misplaced soil. Given the two facts above, what usually has a negative impact on the environment?
pick from the following.
(a). cigarettes.
(b). humans disturb it.
(c). harmful substances.
(d). sunlight.
(e). deforestation.
(f). erosion of dirt.
(g). rainfall.
(h). moon phases.
(f).