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By noah    Posted on 24-04-2022    84 Views    31 Downloads     cartoon maker, akira kurosawa, jokes, hd

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Animals (also called Metazoa) are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1. 5 million living animal species have been describedof which around 1 million are insectsbut it has been estimated there are over 7 million animal species in total. Animals range in length from 8. 5 micrometres (0. 00033 in) to 33. 6 metres (110 ft). They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a body plan that is bilaterally symmetric. The Bilateria include the protostomesin which many groups of invertebrates are found, such as nematodes, arthropods, and molluscsand the deuterostomes, containing both the echinoderms as well as the chordates, the latter containing the vertebrates. Life forms interpreted as early animals were present in the Ediacaran biota of the late Precambrian. Many modern animal phyla became clearly established in the fossil record as marine species during the Cambrian explosion, which began around 542 million years ago.