Energy from biomass:

             Biomass is plant or animal waste that can be burnt as fuel. Other forms of biomass are garbage, farm wastes, sugarcane, and other plants. These wastes are used to run power plants. Many industries that use forest products get half of their electricity by burning bark and other wood wastes. Biomass can serve as another energy source, but problems are there in its use.

              When animal dung, dead plants, and dead animals decompose, they give off a mixture of methane and carbon dioxide. Electricity can be generated by burning methane.