Chemical pesticides are substances used to kill or control pests that harm crops, plants, and livestock. They work by targeting specific biological processes in pests, making them effective in managing agricultural challenges. Common types include insecticides for insects, herbicides for weeds, and fungicides for fungi. While chemical pesticides can boost crop yields and protect food supplies, they may also pose risks to human health and the environment. Overuse can lead to pesticide resistance in pests and harm beneficial organisms, such as pollinators. Therefore, careful management and regulation are essential for sustainable agricultural practices.