Question

how is a delta formed​

Answer 1

Deltas are formed from the deposition of the sediment carried by the river

Answer 2

Answer:

Explanation:

The velocity of the river decreases when it nears the river mouth.Most rivers branch out to distributaries at this stage where where the volume of both water and sediments is high. The sediments brought by the river are deposited between these distributaries forming almost triangular shaped landforms called deltas . These features are called deltas as they  resemble the Greek alphabet Δ (Delta).