A delta is formed by deposition of sediment at the mouth of a river by water fanning out.
Sand is an example of a clastic sediment.
A delta is formed by deposition of sand at the mouth of a river by water fanning out.
Deltas are formed by deposition of what at the mouth of a river by water fanning out?
* air
* water
* salt
* ice
* soils
* sand
* rocks
* barrel