Summary
Highlights
Insects are numerous, with an estimated 200 million for every human, making it important to learn about them.
Insects are invertebrates with bodies divided into a head, thorax, and abdomen, featuring two antennae and six legs, and they breathe through tracheas.
Insects undergo metamorphosis, a series of body changes. They hatch from eggs as maggots, transform into pupae (or chrysalises for butterflies) inside a cocoon, and emerge as adult insects.
Most insects have wings, making them the only flying invertebrates. They also possess compound eyes, providing almost perfect peripheral vision.
Insects come in many types, from annoying head lice, flies, and mosquitoes, to interesting stick and leaf insects, beautiful butterflies and dragonflies, and singing grasshoppers and crickets.
Some insects, like ants and bees, live in highly organized societies where each member has a specific role, such as the queen laying eggs, drones protecting the nest, and workers gathering food.
Despite their small size, insects are fundamental to nature's balance, especially through pollination, which helps new plants grow.