Are some sites better than others?
Are some too hard to understand?
what is the relevant information on the site?
Wind erosion sites…
http://www.environment.nsw.gov.au/topics/land-and-soil/soil-degradation/wind-erosion
http://milford.nserl.purdue.edu/weppdocs/overview/wndersn.html
http://examples.yourdictionary.com/examples-of-wind-erosion.html
Water erosion sites…
https://www.qld.gov.au/environment/land/soil/erosion/types
https://www.agric.wa.gov.au/climate-land-water/soils/managing-soils/water-erosion