Now that you know how bacteria contribute to cavities, you can try to eliminate the problems they cause. Regular visits to the dentist can also help you eliminate plaque and calculus. The lining of the stomach provides some refuge against the high acidity for some hardy bacteria. In this part of the stomach, some microbes can live and may be responsible for giving people ulcers. Large Intestine Human guts are hosts to many billions of microbes.
Microbes provide nutrients to animals.
Microbes in the intestines perform many essential tasks. For example, microbes make several vitamins in the intestines. One of these is vitamin K, a vitamin that is otherwise lacking from human diets. Matter passes through intestines in approximately 24 hours. Bacteroides This is one of the most abundant microbes in the intestine, and is found in higher numbers in people who eat meat than in vegetarians.