SSC MTS EXAM

Detailed explanation-1: -As rivers near the ocean, they reach a point at which saltwater from incoming tides begins to mix with freshwater flowing downstream. This creates the brackish conditions of an estuary.

Detailed explanation-2: -River deltas form when a river carrying sediment reaches either (1) a body of standing water, such as a lake, ocean, or reservoir, (2) another river that cannot remove the sediment quickly enough to stop delta formation, or (3) an inland region where the water spreads out and deposits sediments.

Detailed explanation-3: -A delta is a type of wetland that develops in a low-lying plain. They can be found at the mouths of rivers, flowing into larger bodies of water – usually an ocean. In order for a delta to form, the water must be flowing slowly so that sediment can be deposited to create new landforms.