The Role of Bacteria in the World

By: Dillon Petersen


Decomposers are organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon and nutrients for growth and development. Decomposers can break down cells of other organisms using biochemical reactions that convert the prey tissue into metabolically useful chemical products, without need for internal digestion.

Helpful bacteria to people

The human micro biome is the aggregate of microorganisms, a microbiome that resides on the surface and in deep layers of skin, in the saliva and oral mucosa, in the conjunctiva, and in the gastrointestinal tracts. They include bacteria, fungi, and archaea. Some of these organisms perform tasks that are useful for the human host. One way is they can help break down food in our digestive track.


Good bacteria, also called probiotics, are similar to bacteria that reside naturally in your body. Probiotics may be beneficial to your health, and they are available in yogurt or in various dietary supplements, according to the National Center for Complementary and Alternative Medicine. Probiotics have also been formulated into suppositories and creams for specific uses. Although there is some clinical evidence that the different types of good bacteria can address certain medical conditions.