Pesticides are the substances or the chemical compounds that are used to control pests, including weeds, insects, rodents, fungi and unwanted plants to protect the plants or crops from getting harmed or from destruction. This prevents the predator-prey relationship effects on the crops. Weeds steal water, sunlight, and nutrients from the crops. There are a lot more benefits of pesticides that includes an increase in the production of food, the profits for farmers and the prevention of the diseases on the crops. The pests destroy or harm a large part of agricultural crops, without the use of pesticides.