Cryosol | Soil Monoliths Cryosols (or Gelisols in USDA Soil Taxonomy) have permafrost either within 1 m of the surface or within 2 m if the pedon is strongly cryoturbated in the active layer. Monoliths.soilweb.ca
Among the ancient Greeks, Homer thought the world to be flat. In contrast, Pythagoras postulated that the earth was round. A century later, Aristotle sided with the theory of the roundness of the earth.
Confidence votes 3.8K. because people believed that the world was flat and he wanted to see if that was true Answer. The above answer is incorrect. By the time of Francis Drake (1540-1596) Christiopher Columbus (1451-1506) had already discovered the Americas and Vasco da Gama (1469-1524) had sailed around the world. People already knew the world was not flat.