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      How many species are there on Earth?

      Science (New York, N.Y.)
      American Association for the Advancement of Science (AAAS)

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          Abstract

          This article surveys current answers to the factual question posed in the title and reviews the kinds of information that are needed to make these answers more precise. Various factors affecting diversity are also reviewed. These include the structure of food webs, the relative abundance of species, the number of species and of individuals in different categories of body size, along with other determinants of the commonness and rarity of organisms.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          0036-8075
          0036-8075
          Sep 16 1988
          : 241
          : 4872
          Article
          241/4872/1441
          10.1126/science.241.4872.1441
          17790039
          38845081-dc6f-4e5d-aaed-762e2dcc9085

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