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Entomology, from the Greek words entomos (meaning segmented) and logia (meaning study of) is the scientific discipline focused on the study of insects. It is a sub-discipline of zoology (the study of animals).


Worldwide, the number of insect species is estimated conservatively by the International Union for Conservation of Nature to approach (or likely exceed) 950,000. Insects are critical components of Earth's ecological systems in their varied roles that range from pollinators to disease vectors to foodstuffs rich in protein.

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