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  2. Lists of organisms by population - Wikipedia

    en.wikipedia.org/wiki/Lists_of_organisms_by...

    More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]

  3. List of uninhabited regions - Wikipedia

    en.wikipedia.org/wiki/List_of_uninhabited_regions

    World population density map (1994), showing uninhabited or nearly uninhabited areas in gray. [needs update] The list of uninhabited regions includes a number of places around the globe. The list changes year over year as human beings migrate into formerly uninhabited regions, or migrate out of formerly inhabited regions.

  4. Global biodiversity - Wikipedia

    en.wikipedia.org/wiki/Global_biodiversity

    A May 2016 study based on scaling laws estimated that 1 trillion species (overwhelmingly microbes) are on Earth currently with only one-thousandth of one percent described, [28] [29] though this has been controversial and a 2019 study of varied environmental samples of 16S ribosomal RNA estimated that there exist 0.8-1.6 million species of ...

  5. Minimum viable population - Wikipedia

    en.wikipedia.org/wiki/Minimum_viable_population

    [6] [7] When inbreeding effects are included, estimates of MVP for many species are in the thousands. Based on a meta-analysis of reported values in the literature for many species, Traill et al. reported concerning vertebrates "a cross-species frequency distribution of MVP with a median of 4169 individuals (95% CI = 3577–5129)."

  6. List of organisms by chromosome count - Wikipedia

    en.wikipedia.org/wiki/List_of_organisms_by...

    The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms.This number, along with the visual appearance of the chromosome, is known as the karyotype, [1] [2] [3] and can be found by looking at the chromosomes through a microscope.

  7. Human population projections - Wikipedia

    en.wikipedia.org/wiki/Human_population_projections

    Currently, 757 million humans live in the 101 largest cities; [40] these cities are home to 11% of the world's population. [40] By the end of the century, the world population is projected to grow, with estimates ranging from 6.9 billion to 13.1 billion; [40] the percentage of people living in the 101 largest cities is estimated to be 15% to 23 ...

  8. World population - Wikipedia

    en.wikipedia.org/wiki/World_population

    The tables below list the world's most densely populated countries, both in absolute terms and in comparison to their total populations, as of November 2022. All areas and populations are from The World Factbook, unless otherwise noted. Population density (people per km 2) map of the world in 2020. Red areas denote regions of highest population ...

  9. Population - Wikipedia

    en.wikipedia.org/wiki/Population

    In ecology, a population is a group of organisms of the same species which inhabit the same geographical area and are capable of interbreeding. [2] [3] The area of a sexual population is the area where interbreeding is possible between any opposite-sex pair within the area and more probable than cross-breeding with individuals from other areas.

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