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  2. Relative species abundance - Wikipedia

    en.wikipedia.org/wiki/Relative_species_abundance

    Relative species abundance is a component of biodiversity and is a measure of how common or rare a species is relative to other species in a defined location or community. [1] Relative abundance is the percent composition of an organism of a particular kind relative to the total number of organisms in the area. [citation needed]

  3. AP Human Geography - Wikipedia

    en.wikipedia.org/wiki/AP_Human_Geography

    Russian Language and Culture (discontinued 2010) v. t. e. Advanced Placement (AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, AP HuG, AP Human, HuGS, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered ...

  4. Species distribution - Wikipedia

    en.wikipedia.org/wiki/Species_distribution

    Species distribution, or species dispersion, [1] is the manner in which a biological taxon is spatially arranged. [2] The geographic limits of a particular taxon's distribution is its range, often represented as shaded areas on a map. Patterns of distribution change depending on the scale at which they are viewed, from the arrangement of ...

  5. Biogeography - Wikipedia

    en.wikipedia.org/wiki/Biogeography

    Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. [1] Phytogeography is the branch of biogeography that studies the ...

  6. Latitudinal gradients in species diversity - Wikipedia

    en.wikipedia.org/wiki/Latitudinal_gradients_in...

    Species richness, or biodiversity, increases from the poles to the tropics for a wide variety of terrestrial and marine organisms, often referred to as the latitudinal diversity gradient. [1] The latitudinal diversity gradient is one of the most widely recognized patterns in ecology. [1] It has been observed to varying degrees in Earth's past. [2]

  7. 2023 Nobel Prize in Physiology or Medicine - Wikipedia

    en.wikipedia.org/wiki/2023_Nobel_Prize_in...

    The following publications were the fundamental researches that motivated the Nobel Assembly at Karolinska Institutet to award the 2023 Prize to Karikó and Weissman: [10] Karikó, K., Buckstein, M., Ni, H. and Weissman, D. Suppression of RNA Recognition by Toll-like Receptors: The impact of nucleoside modification and the evolutionary origin ...

  8. Unified neutral theory of biodiversity - Wikipedia

    en.wikipedia.org/wiki/Unified_neutral_theory_of...

    0-691-02129-5. The unified neutral theory of biodiversity and biogeography (here "Unified Theory" or "UNTB") is a theory and the title of a monograph by ecologist Stephen P. Hubbell. [1] It aims to explain the diversity and relative abundance of species in ecological communities. Like other neutral theories of ecology, Hubbell assumes that the ...

  9. AP Biology - Wikipedia

    en.wikipedia.org/wiki/AP_Biology

    Russian Language and Culture (discontinued 2010) v. t. e. Advanced Placement (AP) Biology (also known as AP Bio) is an Advanced Placement biology course and exam offered by the College Board in the United States. For the 2012–2013 school year, the College Board unveiled a new curriculum with a greater focus on "scientific practices".