How does a landfill work and why won’t organic trash degrade in it?
Most landfills are lined with a layer of clay and a liner of protective plastic to prevent harmful waste from leaking into the ground or ground water. Once a layer of waste has been dumped, it is covered with soil effectively cutting off any exposure to air, sunlight and/or water. Under these conditions, trash won’t really decompose because there is little oxygen and moisture.
