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1. species.wikimedia.org › wiki › HauptseiteHauptseite - Wikispecies - Wikimedia

   species.wikimedia.org › wiki › Hauptseite

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   Hauptseite. Wikispecies ist ein offenes und freies Artenverzeichnis, zu dem du gern mit deinen Fähigkeiten beitragen kannst. Es umfasst Tiere, Pflanzen, Pilze, Bakterien, Archaeen, Protisten und alle anderen Lebensformen. Inzwischen sind 875.623 Seiten erstellt worden. Wikispecies gibt es auch auf Twitter: @Wikispecies, oder als Android App ...

2. www.nationalgeographic.org › encyclopedia › endangered-speciesEndangered Species - National Geographic Society

   www.nationalgeographic.org › encyclopedia › endangered-species

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   An endangered species is a type of organism that is threatened by extinction. Species become endangered for two main reasons: loss of habitat and loss of genetic variation. Loss of Habitat. A loss of habitat can happen naturally. Nonavian dinosaurs, for instance, lost their habitat about 65 million years ago.

3. www.scientificamerican.com › article › what-is-a-speciesWhat Is a Species? | Scientific American

   www.scientificamerican.com › article › what-is-a-species

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   1. Juni 2008 · In 1942 he defined a species as a gene pool, calling it a set of populations that can reproduce with one another and that are unable to mate successfully with other populations. The biological ...

4. fr.wikipedia.org › wiki › EspèceEspèce — Wikipédia

   fr.wikipedia.org › wiki › Espèce

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   Dans les sciences du vivant, l’ espèce (du latin species, « type » ou « apparence ») est le taxon de base de la systématique. La définition le plus communément admise est celle du concept biologique 1, 2, 3 : une espèce est un ensemble d'individus qui peuvent effectivement ou potentiellement se reproduire entre eux et engendrer une ...

5. evolution.berkeley.edu › speciation › defining-a-speciesDefining a species - Understanding Evolution

   evolution.berkeley.edu › speciation › defining-a-species

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   The definition of a species as a group of interbreeding individuals cannot be easily applied to organisms that reproduce only or mainly asexually. Also, many plants, and some animals, form hybrids in nature. Hooded crows and carrion crows look different, and largely mate within their own groups — but in some areas, they hybridize.

6. www.catalogueoflife.orgCOL | The Catalogue of Life

   www.catalogueoflife.org

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   species in COL. Other kingdoms. species in COL. COL Version: 2024-04-26 Advanced search . April 26, 2024. Monthly Release April 2024. Monthly release April 2024 of the Catalogue of Life Checklist . March 25, 2024. Monthly Release March 2024. Monthly relea ...

7. www.khanacademy.org › natural-selection › speciationSpecies (video) | Speciation | Khan Academy

   www.khanacademy.org › natural-selection › speciation

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   Transcript. Taxonomy comes to life through the exploration of species, defined as groups of animals that can interbreed to produce fertile offspring. Examples of species include lions, tigers, and horses. Hybrids are the offspring of different species, which are usually infertile. Examples of hybrids include mules and ligers. Created by Sal Khan.

   • Videolänge: 9 Min.

   • Autor: Sal Khan