Bacteria also known as prokaryotes are very ancient single-celled organisms; fossils show that they were widespread 1.5 billion years ago. Today bacteria make up the vast majority of prokaryotes on earth due to the unfavorable ability to adapt quickly to the surrounding environment. Bacteria have the capabilities to survive in areas of high heat, extreme cold, or even very acidic or alkaline conditions. This ability is used frequently to fend off the effects of antibiotics and antibacterial; this can be done by using DNA from neighbouring bacteria thus changing its genetic makeup. The DNA change that occurs is passed from one generation to the next. Bacteria can also turn genes on and off creating different genetic combinations, which cancels
