methanogen Directory References Discover How Many Countries Are There in the World? 7 Deadliest Weapons in History How Deadly Is Quicksand? The Seven Sacraments of the Roman Catholic church Roman Catholic Saints What Is the Most Widely Practiced Religion in the World? Which Religion Is the Oldest? Contents methanogen biology Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:archaea In archaea…around pH 0; and the methanogens, which produce methane gas as a metabolic by-product and are found in anaerobic environments, such as in marshes, hot springs, and the guts of animals, including humans.Read More