Description : Define any five of the following terms. a) Biogas b) Geothermal energy c) Vaccine d) Antibiotic e) Ceramics f) Light year
Last Answer : a) Biogas: Biogas is the result of the controlled microbial breakdown of organic materials such as animal manures or food scraps in an anaerobic digester.Biogas is a mixture of about 60-70% methane (natural ... 10 trillion km. More precisely, one light-year is equal to 9,500,000,000,000 kilometers.