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Original file (781 × 1,314 pixels, file size: 9.49 MB, MIME type: application/pdf, 180 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia (/ ˌ æ n ɪ ˈ m eɪ l i ə / [4]).With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.
The Encyclopedia of Life (EOL) is a free, online encyclopedia intended to document all of the 1.9 million living species known to science. It aggregates content to form "pages" for every known species. Content is compiled from existing trusted databases which are curated by experts and it calls on the assistance of non-experts throughout the world.
The following outline is provided as an overview of and topical guide to zoology: . Zoology – study of animals.Zoology, or "animal biology", is the branch of biology that relates to the animal kingdom, including the identification, structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... There are several lists of individual animals on Wikipedia. These are lists ...
Biologists can study life at multiple levels of organization, [1] from the molecular biology of a cell to the anatomy and physiology of plants and animals, and the evolution of populations. [ 1 ] [ 6 ] Hence, there are multiple subdisciplines within biology , each defined by the nature of their research questions and the tools that they use.
The encyclopedia of animals: A complete visual guide. University of California Press, 2004. ISBN 0520244060. [1] Burton, Maurice, Robert Burton. International wildlife encyclopedia. Marshall Cavendish, 2002. ISBN 0761472665. [1] Encyclopedia of Animal Behavior. Facts on File, 1987. [6] Encyclopedia of Animal Biology. Facts on File, 1987. [6]