Bacterial infections are usually prevented and treated with antibiotic. For a very long time, antibiotics were considered to be wonder drugs and were used to cure many diseases. However, there is a major issue with our over usage of antibiotics. The problem is, antibiotics are becoming less and less effective. This is due to the fact that human developed a resistance to it. in Fact, it is the bacteria themselves that developed that resistance. The Theory of Evolution asserts that living things evolve over time. Bacteria naturally adapted to antibiotics through natural selection.