Insect diversity refers to the vast variety of insect species found on Earth, with estimates suggesting there are over 10 million different types. This diversity is crucial for ecosystems, as insects play essential roles in pollination, decomposition, and serving as food for other animals. Insects are classified into several orders, including Coleoptera (beetles), Lepidoptera (butterflies and moths), and Hymenoptera (bees and ants). Each order contains numerous species adapted to various environments, showcasing the incredible adaptability and evolutionary success of insects in different habitats around the world.