Landfill Gas When waste materials decay in a landfill, methane and other gases can be produced.
(waste materials; decay; L:in a landfill, methane and other gases) (Landfill Gas; can be produced; T:When waste materials decay in a landfill, methane and other gases)
waste materials Landfill Gas
decay can be produced
L:in a landfill, methane and other gases
T:When waste materials decay in a landfill, methane and other gases