Entomology is the scientific study of insects, a branch of zoology that focuses on understanding their biology, behavior, and ecology. Insects are the most diverse group of animals on Earth, with millions of species identified, including beetles, butterflies, and ants. Entomologists study these creatures to learn about their roles in ecosystems, such as pollination and decomposition. The field of entomology also has practical applications, including agriculture, medicine, and environmental science. By understanding insect behavior and life cycles, researchers can develop strategies for pest control, improve crop yields, and study the spread of diseases carried by insects like mosquitoes.