Being exposed to what can cause erosion of dirt?
cement wind deltas rocks rain a building rivers cars
A B C D E F G H
To many people, soil is nothing but dirt.
Being exposed to wind can cause erosion of dirt.
Being exposed to what can cause erosion of dirt? (A) cement (B) wind (C) deltas (D) rocks (E) rain (F) a building (G) rivers (H) cars