What characteristics do bacteria have that provide environmental success

They have the ability to rapidly reproduce, and sometimes have resistance to clinical bacteria. Which means that they can't be destroyed in clinical studies. They have incredible resistance to many climates and can survive in many parts of the world. For example, the common cold can exist in the cold northern regions of the world, while also surviving in locations around the equator where climates can become hot and muggy. This is due to their ability to change and adapt to their environment.