Solution:
Microbes are used in the production of biofertilizers, which are used to improve the growth and yield of crops. Biofertilizers are made up of beneficial microorganisms, such as bacteria, fungi, and algae, which can fix atmospheric nitrogen and make it available to plants, as well as solubilize other essential nutrients such as phosphorus and potassium. These microorganisms are typically added to soil or plant surfaces, where they can help to improve plant growth, increase crop yields, and reduce the need for synthetic fertilizers. In addition to biofertilizers, microbes are also used in other biotechnological applications, such as the production of biogas, bioplastics, and the purification of wastewater.