Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Erosion is loss of soil caused by rain and wind. Given the two facts above, wind and rain cause what to become deeper and wider?
Select from the following.
(A). burrs
(B). soil
(C). time
(D). effort
(E). eroded
(F). solutes
(G). river
(H). gaps
(G).