AnimalAnimals are multicellular, eukaryoticorganisms belonging to the biologicalkingdomAnimalia (). Animals consume organic material, breathe oxygen, have myocytes, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development. With few exceptions, animals are able to move. Animals form a clade, meaning that they arose from a single common ancestor. Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs...
ArcheanEtymologyName formalityFormalAlternate spelling(s)Archaean, ArchæanSynonym(s)EozoicJ.W. Dawson, 1865Usage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitEonStratigraphic unitEonothemTime span formalityFormalLower boundary definitionTen oldest U-Pb zircon agesLower boundary GSSAAlong the Acasta River, Northwest Territories, Canada65°10′26″N115°33′14″W / 65.1738°N 115.5538°W / 65.1738; -115.5538Lower GSSA ratified2023Upper b...
Binomial nomenclatureIn taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (often shortened to just "binomial"), a binomen, binominal name, or a scientific name; more informally, it is also called a Latin name. In the International Code of Zoological Nomencl...*As an Amazon Associate I earn from qualifying purchases.