Why is bacteria useful?

Bacteria fulfill countless vital roles...





Bacteria often exist in a symbiotic relationship with animals, fulfilling vital functions necessary for the animal's survival. A great example of this would be E.Coli bacteria, which thrive in human intestines and are required for proper digestion.





Bacteria are responsible for breaking down organic matter and returning nutrients to the soil, where they can be re-assimilated by plant life.





Bacteria also form symbiotic relationships with plants... one such example being nitrogen-fixing bacteria, which are capable of reducing atmospheric nitrogen to ammonia, making it available to their 'host' plants.





Bacteria are used by humans to process foods, to produce antibiotics and other medicinal drugs, control plant pests, clean up environmental waste, create composts and fertilizers, etc.





The list goes on %26amp; on....

Why is bacteria useful?
Two major reasons:





They are useful as "simple models" to study complex life.





They make life possible for us "higher organisms"; our stomach bacteria actually break down much of the food we eat.
Reply:They help break down food and help in the creation of vitamins in the intestines.





They are also used in the creation of certain foods, mainly dairy products.





They are also good to study, and can be used to help create new medicines.





Even outside, they help break down what animals won't eat such as road kill.
Reply:it help biodegrate natural things. you also have bacteria in your stomach that helps you digest food.
Reply:They clean up plants and animals that die. They help you digest your food. On your skin they help keep the fungus at bey. They help make yogurt and cheese.
Reply:it helps make cheese and yogurt if there was no bacteria it would just stay a gloopy mess instead of in the case of cheese setting