a. name four gases which are mainly present in biogas. b. List two advantages of using biogas over fossil fuels.
(a) Four gases commonly present in biogas are: Methane- The amount of methane in raw biogas can range from 50 to 60 percent. Carbon Dioxide- The amount of Carbon Dioxide can range from 30 to 40 percent. Hydrogen sulfide. Ammonia. (b) Advantages of Biogas Biogas is Eco-Friendly. ... Biogas Generation Reduces Soil and Water Pollution. ... Biogas Generation Produces Organic Fertilizer. ... It's A Simple and Low-Cost Technology That Encourages A Circular Economy. ... Healthy Cooking Alternative For Developing Areas.
