Question

1. which of the following landforms is the result of a process that is both constructive and destructive? a sand dune b canyon c the dust bowl d waterfall

Explanation:

Waterfalls are formed by erosion (destructive) which undercuts rock and also by deposition (constructive) of sediment downstream. Sand - dunes are mainly formed by wind - driven deposition (constructive). Canyons are mainly the result of long - term erosive (destructive) action of water. The Dust Bowl was a man - made and weather - related environmental disaster, not a landform formed by a constructive and destructive process in the geological sense.

Answer:

D. waterfall