How is bacteria helpful?
Probiotics, are similar to bacteria that reside in human body. Probiotics might be beneficial to our health. They are available in yoghurt or various dietary supplements.
You can tell bacteria are working in your gut since you can sometimes smell the gas they produce. The gas, builds up in your intestines, is a waste gas from the bacteria as a result of their work to digest your food. When there is too much gas for your intestines, it is released from your body as flatulence (which is also called a fart (Sorry, I do not want to be rude).
Outside of our body, bacteria like lactic acid and streptococcus bacteria are also very beneficial in producing food. Bacteria are used to make dairy products like cheese, yoghurts, and sour cream.