biogeography wikipedia - EAS
Unified Soil Classification System - Wikipedia
https://en.wikipedia.org/wiki/Unified_Soil_Classification_SystemWebThe Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil.The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt):
Nullarbor Plain - Wikipedia
https://en.wikipedia.org/wiki/Nullarbor_PlainWebThe Nullarbor Plain (/ ˈ n ʌ l ər b ɔːr / NUL-ər-bor; Latin: nulla feminine of nullus, 'no', and arbor, 'tree') is part of the area of flat, almost treeless, arid or semi-arid country of southern Australia, located on the Great Australian Bight coast with the Great Victoria Desert to its north. It is the world's largest single exposure of limestone bedrock, and occupies an …