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Select the correct statement from the followingA. Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.B. Biogas is produced by the activity of aerobic bacteria on animal wasteC. Methanobacterium is an aerobic bacterium found in rumen of cattleD. Biogas, commonly called gobar gas, is pure methane |
Answer» Correct Answer - A | |