Solution:The main constituent of biogas is methane. That's why it is called as a bio methane. This biogas is made up of animal faeces and kitchen waste. Biogas is used to fuel transportation. Biomass is renewable energy. The creation of biogas is based on the aerobic digestion of sewage. The raw material is fed into a biogas digester in the absence of oxygen releasing gases like 45–85 vol% methane (CH4) and 25–50 vol% carbon dioxide (CO2). Major ration of methane will be present in the mixture of gas that’s the reason that biogas also referred as bio methane.