1 Insertion â when a base is added to the sequence. 2  Deletion â when a base is deleted from the sequence.  Copy number variation (CNV) is a type of mutation where large chunks of DNA are inserted, repeated or lost. These regions of DNA can be between 10,000 and 5,000,000 bases long.
Wind deposition can result in dunes and loess deposits.
Coastal Landforms (Features of Erosion). Land forms on the coast are created or formed as a result of wave processes such as corrasion/abrasion, hydraulic, solution and attrition.These processes erode the coast and the material is transported and deposited along the coastline.e can categorize the landforms into two categories: features of erosion and features of deposition. Features of erosion include cliffs, notches, wave-cut platforms, stacks and headlands and bays, caves, arches. While features of deposition include beaches, spits, tombolos, bars, etc.