Or ‘biological diversity’, meaning “The variability among living organisms from all sources including terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species, between species and of ecosystems.” There are estimated to be 8.7 million species (give or take 1.3 million and excluding bacteria) on Earth. (sources: United Nations Convention on Biological Diversity, 1992, and IPBES, 2022)
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