Even if they lose a leg, they are still insects. Eggs, pupae and larvae are the immature, or young, stages that insects may go through. Around a million that we know of . They live everywhere from the hot, tropical zones to the polar regions. They are the most numerous and diverse of all animals.
Insects pollinate plants.
Bees, butterflies, wasps and many others help plants make seeds and fruits. They gather pollen and move from flower to flower, which helps plants to make seeds and fruits. Without pollinator insects, there are many fruits and vegetables we would not have. Insects break down dead things, like plants and other animals. Roaches, flies, and many other insects that we don't like, help with this important process.