Insects create the biological foundation for all terrestrial ecosystems. They cycle nutrients, pollinate plants, disperse seeds, maintain soil structure and fertility, control populations of other organisms, and provide a major food source for other taxa.

Why are insects so important?

Every insect plays a role in the ecosystem in which it is found. ... Therefore, the continuation of most plant species is dependent on these insects. Not only is this important for wildlife habitats, but also for humans, who rely on effective pollination for food.

How are insects important to humans?

Insects provide useful services to mankind and the environment in a number of ways. They keep pest insects in check, pollinate crops we rely on as food, and act as sanitation experts, cleaning up waste so that the world doesn't become overrun with dung.