GEOLOGY

Detailed explanation-1: -When the velocity of wind or water slows, eroded sediment is deposited in a new location. The sediment builds up in a process called sedimentation and creates fertile land.

Detailed explanation-2: -Landforms like flood levees, flood plains and deltas are formed because of the depositional works of the river.

Detailed explanation-3: -Actions of most of the geomorphic processes and agents are slow, and hence the results take a long time to take shape. Every landform has a beginning. Landforms once formed may change in their shape, size and nature slowly or fast due to continued action of geomorphic processes and agents.

Detailed explanation-4: -Deposition is the laying down of sediment carried by wind, flowing water, the sea or ice. Sediment can be transported as pebbles, sand and mud, or as salts dissolved in water. Salts may later be deposited by organic activity (e.g. as sea shells) or by evaporation.

Detailed explanation-5: -Beaches are formed from sand, sand and shingle or pebbles. They can also be formed from mud and silt. A sandy beach is usually formed in sheltered bays, where low energy, constructive waves transport material onto the shore.