Answer:
Constructive process: a process or force that builds up features of the earth, like volcanos creating islands
Destructive process: a process that destroys features of the earth, like earthquakes
Erosion: the movement of soil, minerals and rock from one place to another
Weathering: the breaking down of rocks; this can be done physically or chemically
Delta: a landform at the mouth of a river that is formed by deposited sediment
Sand dune: a mountain of sand caused by years of windblown sand that gets trapped by an object, such as grass
