Role of bacteria in our world

By Justin lee


1) decomposes dead organisms

-this is a very big pro because of the fact that without bacteria, our world would be filled with dead animals and plants. Bacteria saves our world from being crowded with dead organisms everywhere.

2)fixed nitrogen

-this is also a very big con because without fixed nitrogen, a lot of living things could not live as they use it to live. Nitrogen fixing Bactria effects around 90% of all nitrogen.


1) bacteria infects living things

-bacteria infects almost all living things. It is very common and not always lethal but can be. They create diseases that can kill living things or just hinder them.

Role in environment

Although bacteria is a very bad thing and harms people everywhere, without it things would not be the same and actually be worse. With both pros and cons it is a necessary thing in our environments.