Final answer:
Insects are successful due to their adaptations for living in various habitats, including flight, specialized appendages, senses, mouthparts, and chemical communication. They also exhibit complex social behaviors and have ecological importance such as pollination.
Step-by-step explanation:
Insects are likely so successful because of their adaptations that allow them to live in a wide range of habitats. One of the main adaptations is flight, which helps insects escape predators and find food and mates. Additionally, insects have specialized appendages, senses, mouthparts, and chemical communication that help them thrive in different environments. Some insects also have complex social behaviors and play important ecological roles like pollination.