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  2. Domain (biology) - Wikipedia

    en.wikipedia.org/wiki/Domain_(biology)

    In biological taxonomy, a domain (/ d ə ˈ m eɪ n / or / d oʊ ˈ m eɪ n /) (Latin: regio [1]), also dominion, [2] superkingdom, realm, or empire, is the highest taxonomic rank of all organisms taken together. It was introduced in the three-domain system of taxonomy devised by Carl Woese, Otto Kandler and Mark Wheelis in 1990. [1]

  3. Kingdom (biology) - Wikipedia

    en.wikipedia.org/wiki/Kingdom_(biology)

    In 1937 Édouard Chatton introduced the terms "prokaryote" and "eukaryote" to differentiate these organisms. [9] In 1938, Herbert F. Copeland proposed a four-kingdom classification by creating the novel Kingdom Monera of prokaryotic organisms; as a revised phylum Monera of the Protista, it included organisms now classified as Bacteria and Archaea.

  4. K3 surface - Wikipedia

    en.wikipedia.org/wiki/K3_surface

    The Picard group of a K3 surface X is always a finitely generated free abelian group; its rank is called the Picard number. In the complex case, Pic(X) is a subgroup of (,). It is an important feature of K3 surfaces that many different Picard numbers can occur.

  5. Food web - Wikipedia

    en.wikipedia.org/wiki/Food_web

    Position in the food web, or trophic level, is used in ecology to broadly classify organisms as autotrophs or heterotrophs. This is a non-binary classification; some organisms (such as carnivorous plants) occupy the role of mixotrophs, or autotrophs that additionally obtain organic matter from non-atmospheric sources.

  6. Biology - Wikipedia

    en.wikipedia.org/wiki/Biology

    Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organism's metabolic activities via cellular respiration. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water.

  7. Biodiversity - Wikipedia

    en.wikipedia.org/wiki/Biodiversity

    The 1992 United Nations Earth Summit defined biological diversity as "the variability among living organisms from all sources, including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part: this includes diversity within species, between species and of ecosystems". [15]

  8. Mixotroph - Wikipedia

    en.wikipedia.org/wiki/Mixotroph

    A mixotroph is an organism that uses a mix of different sources of energy and carbon, instead of having a single trophic mode, on the continuum from complete autotrophy to complete heterotrophy. It is estimated that mixotrophs comprise more than half of all microscopic plankton. [1] There are two types of eukaryotic mixotrophs.

  9. Porpita porpita - Wikipedia

    en.wikipedia.org/wiki/Porpita_porpita

    Porpita porpita, or the blue button, is a marine organism consisting of a colony of hydroids [2] found in the warmer, tropical and sub-tropical waters of the Pacific, [3] Atlantic, and Indian oceans, as well as the Mediterranean Sea and eastern Arabian Sea. [4] It was first identified by Carl Linnaeus in 1758, under the basionym Medusa porpita.

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