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Land degradation

The reduction or loss of the biological or economic productivity from rain fed cropland, irrigated cropland, or range, pasture, forest and woodlands. Land degradation usually results from unsustainable land use.

Landfill

Land waste disposal site in which waste is generally spread in thin layers, compacted, and covered with a fresh layer of soil.

Leachate

Typically, water that has come in contact with hazardous wastes. For example: Water from rain or other sources that has percolated through a landfill and dissolved or carries various chemicals, and thus could spread contamination. Current landfills have systems to collect leachate before that can happen.

Leaching

As water moves through soils or landfills, chemicals in the soil may dissolve in the water thereby contaminating the groundwater. This is called leaching.



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