A delta is formed by deposition of sediment at the mouth of a river by water fanning out.
Sometimes the water of the ganges mixes with the current of the river saraswati.
The ganges has deltas formed by sediment being deposited at its mouth by water fanning out.
What is formed by sediment being deposited at its mouth by water fanning out?
Options:
  waterfalls
  rivers
  detritus
  soils
  deltas
  soft soil
  lagoons
  Rocks