Q.What is Pedogenesis?

Soil is a mixture of organic matter, minerals, gases, liquids and organisms occupying the pedosphere, formed from parent rock through weathering (pedogenesis) into a layered soil profile. It serves four major functions — medium for plant growth, water storage/purification, modifier of the atmosphere, and habitat for organisms that in turn modify it — and is defined by measurable properties: texture (set by relative sand/silt/clay content), porosity (fraction of volume that is pore space), permeability (how readily water moves through those pores, directly related to pore size and inversely to water-holding …