ORGANIC LAYER (the most part consists in dead plants and animals), TOP SOIL ( rich in humus and roots of plants ), SUBSOIL ( rich in minerals, there are sand, clay, gravel), PARENT ROCK (soil and weathered rocks), BEDROCK (large unweathered rocks).

SOIL LAYERS

लीडरबोर्ड

दृश्य शैली

विकल्प

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