Animals
Animals (lat. Animalia) - traditionally (since Aristotle) allocated category of organisms, is now regarded as a biological kingdom. Animals are the main object of study zoology. Animals are eukaryotes (cells have a nucleus). The classic signs of animals are: heterotrophy (food prepared with organic compounds) and the ability to actively move. However, there are many animals, the leading fixed way of life, but also characterized by heterotrophy mushrooms and some parasitic plants. In everyday life, the terms "wild animals",...