The Role of Bacteria in the World
What does bacteria do for us?
So where are they?
Bacteria live in almost all environments, even in the oceans, soil, and the intestines of humans. Most all surfaces, those that have not been sterilized, are covered in bacteria.
Roles of Bacteria
Cyanobacteria, an important type of bacteria, is thought to be responsible for the addition of oxygen into the Earth's atmosphere, as cyanobacteria contains chlorophyll and practices photosynthesis, which releases oxygen as a by-product.
Bacteria are an essential part to many ecosystem services. For one, bacteria are decomposers, and many break down organic waste and remains and return nutrients to the soil and environment. Bacteria also play a prominent role in both the nitrogen and carbon cycles.
Not only are bacteria a part of human systems and functions, but humans also use bacteria to create products, biogas, recovering from oil spills and toxic waste, pesticides, and fermenting foods like cheese and yogurt. Bacteria are used to manufacture and produce drugs, such as antibiotics and vaccinations. Even in human gene therapy, bacteria are used.