The Number of Insects in the World

There are over 900,000 known insect species on Earth, which is 75% of all animal species. It is estimated that there may be another order of magnitude of insects to discover which would equate to approximately 10,000,000 (10 million) species of insect. It is estimated that there are 10,000,000,000,000,000,000 (10 quintillion also said as 10 billion billion or 1018) on Earth at any given time

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