The plant will run out of food.

The plant will fall off of the rock.

The rock will break into smaller pieces.

The rock will become larger to support the plant.

sewage runoff

an earthquake

sediment deposition

erosion caused by a glacier

Soil can be washed away.

Soil creation may take years.

River sand forms a delta.

Planting grass protects the soil.

Water froze on the rock and broke it apart.

Chemicals in the air dissolved the rock.

River water flowed over the rock.

Wind wore away some of the rock.

earthquakes

rivers flooding along a coastal plain

erosion and weathering

underground lava melting rocks

a volcano

a landslide

an avalanche

an earthquake

A delta is formed by wind. A sand dune is formed by water.

A delta is formed by water. A sand dune is formed by wind.

Both are formed by wind.

Both are formed by water.

deposition of sand

erosion of sand by waves

sand mixing in the water

creation of sand by weathering

tsunami

earthquake

mudslide

weathering