1) Wind erosion occurs through deflation and abrasion, which removes loose sediment and wears down rock surfaces over time. 2) Factors that increase erosion include a lack of vegetation and dry, loose soils, while factors that decrease erosion include vegetation, which holds soil in place, and windbreaks, which reduce wind speed. 3) Wind can deposit sediments as well, forming fertile soils like loess or landforms like dunes, which vary in shape depending on wind patterns and sediment availability.