Question

Which of the soil types described by the Food and Agriculture Organization of the United Nations (FAO) is most common world-wide?

Answer 1

Leptosol
Leptosol is soil in eroded uplands, and forms 13.19% of Earth's land area. The second most common soil group is cambisol, soil still in the process of forming but, in temperate climates, among the most productive; acrisol (seasonally dry humid tropics) is the third most common; arenosol is sandy. Of the 30 major soil groups designated by the FAO, it notes only eight (cambisol being one of them) as having a high inherent soil fertility. They constitute 31 percent of total land area.