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.
As the wind speed decreases, deposition of soil particles begins. Wind erosion most commonly occurs in arid and semi-arid regions, because of the frequent occurrence of dry and windy conditions. This video clip explains the three steps in wind erosion (detachment, transport, and deposition).