Microbes are found everywhere and play important roles in human welfare. They are used to produce food like bread and cheese through fermentation. Microbes also help treat wastewater by reducing pollutants. They produce useful products for industry such as ethanol, antibiotics, and enzymes. Microbes serve as biofertilizers by increasing soil fertility through nitrogen fixation or aiding plant nutrient uptake. They are also used as biocontrol agents to naturally control agricultural pests.