6.+Research

= //__Research__// = === //A landfill is a hole that on the ground and it is harmful and can make a gas called methane gas. It can make methane gas, cause decease and it smell stink. Methane gas is harmful, when it reach air it will pollute but it is also a useful oil. There are two ways to deal with methane gas, we can burned it, called flaring. The other way to deal with methane gas is to change it into electricity, only if there is enough quantity and the quality of the gas is good.// ===

=//__ The Four R's __//=