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Animal - Wikipedia
Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth.
Animal | Definition, Types, & Facts | Britannica
animal, (kingdom Animalia), any of a group of multicellular eukaryotic organisms (i.e., as distinct from bacteria, their deoxyribonucleic acid, or DNA, is contained in a membrane-bound nucleus). They are thought to have evolved independently from the unicellular eukaryotes.
Animal Encyclopedia With Facts, Pictures, Definitions, and More!
Reference Library – See helpful information on conservation, classification, animal evolution, and more; Glossary – A list of scientific and technical animal terms, with definitions; Animal Habitats – Learn all about different animal habitats; Diet – The different animal diets like omnivores, herbivores, and carnivores defined with examples
animal | Journal | ScienceDirect.com by Elsevier
animal publishes the best, innovative and cutting-edge science that relates to farmed or managed animals, and that is relevant to whole animal outcomes, and/or to animal management practices. Papers can be accepted from all species if they are in, or contribute knowledge to, farmed and managed animal systems (e.g., cattle, sheep, pigs, poultry ...
Animals - National Geographic Kids
Explore animal facts, pictures, and videos on National Geographic Kids.
Animals: A Complete Guide To The Animal Kingdom - Active Wild
An animal is a complex, multicellular organism that belongs to the biological kingdom Animalia – the animal kingdom. Animals range from relatively simple organisms such as sponges and jellyfish to complex ones such as humans and elephants.
Animal Pictures and Facts - National Geographic
Animal Pictures and Facts. Learn all you wanted to know about animals with pictures, videos, facts, news, and more.
Animalia - Online Animals Encyclopedia
Welcome to Animalia, an online animal encyclopedia where you can learn about all your favourite animals, and even some you may have never heard of.
Animal - Multicellular, Heterotrophic, Eukaryotes | Britannica
Animal - Multicellular, Heterotrophic, Eukaryotes: A characteristic of members of the animal kingdom is the presence of muscles and the mobility they afford. The muscles that distinguish animals from plants or fungi are specializations of the actin and myosin microfilaments common to all eukaryotic cells.
Animal - Anatomy, Physiology, Behavior | Britannica
To stay alive, grow, and reproduce, an animal must find food, water, and oxygen, and it must eliminate the waste products of metabolism. The organ systems typical of all but the simplest of animals range from those highly specialized for one function to those participating in many.
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