By providing a non-polluting energy source which is also renewable, the earth is being kept clean of harmful emissions. Biogas is also the ideal way to ensure that all areas have access to electricity. As a fairly cheap source of electricity, biogas is a fuel source that has the power to provide decent energy to the world.
Deforestation is the result of trees being cut down and used as fuel for fires in areas where there is no access to electricity. With biogas, the waste that would be there can be used to create fuel. This means that trees do not have to be cut down and plants do not have to be damaged.