Identify landform D, explain how it forms, and tell whether it is the result of erosion or deposition.

D is a spit. It is produced as a result of longshore drift conveying sediment through the beach and accumulating the sediments at a hurdle.

Explanation:

Spits are a product of deposition of sediment - which is a result of constant supply of longshore drift due to an alteration in the way or shape of a coastline. It is an extended stretch of beach substances which links to the mainland out of the sea at a certain end.

A typial form of a spit is Spurn Head, located in the north east of England at the north of the Humber Estuary. It is formed as a result of deposition of material from the erosion of the Holderness Coast in the north direction. Another example is Spurn Head in Yorkshire.

P.S. The attached image shows a Spit

answer; both surfaces of the membrane are nonpermeable