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SUBJECT
Water content (w):It is define as the weight of water to the weight of solids present in the given soil mass. Moisture content (m): It is define as the mass of water to the mass of solids present in the given soil mass. The result of water content & moisture content are same .
Soil is a three-phase system that consists of solid, liquid & gaseous matter, that do not occupy separate spaces, but are blended with each other in a definite proportion, which in turn governs the properties 0f soil.
There are many types of soil. Examples - Alluvial soil, Lacustrine soil, Marine soil, Aeolian soil, Glacial soil, Colluvial soil, Loess soil, Marl soil & others.
The process of formation of soil is termed as PEDOGENESIS. Soil is formed due to the weathering (erosion /wear and tear) of rocks. Weathering of rock can occur either physically or chemically.