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почвенный горизонт

Its layers, which from top to bottom are the O-horizon (or zone of leaching) of freshly fallen plant litter, leaves, an A sublayer of water-holding humus, and another of insoluble minerals, a B-horizon (or zone of deposition) of clay and other inorganic particles, and a C-horizon with rock fragments weathered from the bedrock.

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  • enchantress
  • (Ukraine)

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