ANIMALS
The animal is a multicellular organism that, generally, presents the capacity of movement and sensitivity. It is characterized by having many eukaryotic cells, lacking a cell wall and photosynthetic pigments, and in addition to being heterotrophic, its nutrition is mainly effected by ingestion through an internal cavity, some animals feed on other living beings, and their reproduction It is usually sexual.
The morphology of an animal is very diverse, exists both microscopically (a worm) and large (a whale), just as its anatomy is very different between species.
An animal can live in water (aquatic) or on land (terrestrial).
Animals are a vital link in the food chain and are essential in maintaining the ecological balance, because when they die pass part of humus soil and then to decompose are absorbed by the plants for their nutrition and reproduction.
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