Report on Snake-(Доклад о змее) Snakes – a suborder of reptiles of group scaly. All known snakes – predators, among various variety of snakes meet harmless and very dangerous to the person and animals poisonous representatives. Now on Earth more than 3000 species of the snakes united in 14 families are. Venomous snakes make about a quarter of known types. Body extended without extremities, eyes are deprived of eyelids, external ears are absent, but snakes feel vibration from the earth. Snakes have no bladder. Snakes differ a huge number of vertebras (from 200 to 450). Length of a body is from 10 cm to 13,5 m. The thorax isn't present, when swallowing food of an edge are moved apart. The right lung is usually developed only, left either is absent, or is rudimentary. At snakes poisonous tooth rotates on 90 °, it can develop to 4,5 cm. From legless lizards of a snake differ a mobile fastening of the left and right parts of jaws (that gives the chance to swallow production entirely), lack of mobile eyelids and an eardrum, lack of a humeral belt. Snakes mastered practically all vital spaces of Earth, except air (but, it магглы so consider). Snakes on all continents, except Antarctica meet. They are widespread from the Polar circle in the north to the southernmost tip of the American continent. Snakes in tropical areas of Asia, Africa, South America and in Australia are especially numerous. Prefer to live in territories with hot climate. Live in various ecological conditions — the woods, steppes, deserts, in the foothills and mountains. Snakes generally lead land existence, but some types live underground, in water, on trees. At approach of adverse conditions, for example as a result of a cold snap, snakes fall into hibernation. Snakes, as a rule, swallow production entirely. The mechanism of swallowing consists in alternate movement by the right and left half bottom jaws (the snake as though crawls over the production). Breed an otkladka of eggs.SNAKE – the most essential, difficult and universal, from all symbols embodied in animals, probably, most ancient of them. The Paleolithic images of a snake cut out from cervine horns or drawn on rocks, were first of all fertility and rain symbols. The sexual and agricultural symbolics remained a basic element and later cults of a snake. The snake was first of all a magic and religious symbol of forces which have generated life, sometimes it represented God Founder. Oroboro – a snake biting for a tail, – a symbol not only eternity, but also divine self-sufficiency. Думаю этого достаточно)