Leaching
percolation
unsaturated layers of the earth
fossils
sedimentary rock
Substances with different densities will separate into layers.
percolation
Leaching is the removal of substances by percolating water.The movement of dissolved substances or particles into a horizon is called illuviation. The movement of dissolved substances or particles out of a horizon is called eluviation.
Leaching
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A plant root's membrane is permeable to water, but not to all dissolved substances. A permeable bandage allows air to reach the wound. Water enters permeable layers underground which can filter it.
Leaching
unsaturated layers of the earth
Leaching.
Leaching
leaching
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a treatment modality whereby the doctor seals off the small blood vessels that cause spider veins by passing a weak electric current through a fine needle to the walls of the veins.