The largest soil order in the world

Solution (By Examveda Team)

Based on chemical, physical and biological features soil has been categorized into 12 categories and these are called soil orders. These are Vertisols, spodosols, Mollisols, Histosols, Entisols, Andisols, Ultisols, Oxisols, Inceptisols, Gelisols, Ardisols, Alfisols. Entisols are the most extensive soil order in the world, occupying 18% of Earth's land area approximately.