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  1. Definition, Examples, Levels, & Classification - Britannica

    Dec 2, 2025 · taxonomy, in a broad sense the science of classification, but more strictly the classification of living and extinct organisms—i.e., biological classification. The term is derived from the Greek …

  2. Taxonomy - Classification, Naming, Organizing | Britannica

    Dec 2, 2025 · Recent advances in biochemical and electron microscopic techniques, as well as in testing that investigates the genetic relatedness among species, have redefined previously …

  3. biological classification - Students - Britannica Kids

    Following are overviews of each taxonomic level in modern biological classification. (For a detailed description of domains and kingdoms, see “Classification of Living Things” in the article living things.) …

  4. Taxonomy - Classification, Organisms, Groups | Britannica

    Dec 2, 2025 · Recent advances in biochemical and electron microscopic techniques, as well as in testing that investigates the genetic relatedness among species, have redefined previously …

  5. Life - Evolution, History, Earth | Britannica

    Dec 13, 2025 · All life tends to increase: more organisms are conceived, born, hatched, germinated from seed, sprouted from spores, or produced by cell division (or other means) than can possibly survive. …

  6. Fungus - Annotated classification | Britannica

    Dec 10, 2025 · Fungus - Annotated classification: Kingdom Fungi Eukaryotic (with true nuclei); acellular (e.g., highly adapted parasites), unicellular (e.g., species adapted to life in small volumes of fluid), or …

  7. levels of biological classification - Students | Britannica Kids ...

    The science dealing with the classification of animals and other living things is called taxonomy. A taxonomist creates from a varied array of organisms a hierarchy of groupings, or taxa (singular, …

  8. Life | Definition, Origin, Evolution, Diversity, & Facts | Britannica

    Dec 13, 2025 · Life-forms present on Earth today have evolved from ancient common ancestors through the generation of hereditary variation and natural selection.

  9. Taxonomy - Classification, Naming, Organizing | Britannica

    Dec 2, 2025 · In order to avoid such mistakes, it is necessary to consider many characters of the organism—not merely one aspect of the wings but their anatomy and the features of the various …

  10. Classification | biology | Britannica

    taxonomy, in a broad sense the science of classification, but more strictly the classification of living and extinct organisms—i.e., biological classification. The term is derived from the Greek taxis …