Why do deltas form?
A) because tidal currents carry sediment from elsewhere along the shoreline
B) because when streams reach base level,the sediment they carry settles out and is deposited
C) because stream sediments cannot be transported in seawater
D) because in places,stream water sinks into the ground where it meets the oceans,leaving behind sediments

Question

Quizplus · Accepted Answer

Deltas form when streams reach their base level (typically the sea) and the sediment they carry settles out and is deposited. This process is known as sedimentation and is what creates the characteristic fan shape of a delta.

Why Do Deltas Form