Snakes

A snake has been on earth for over 130 million years. Snakes are elongated, legless, carnivorous reptiles of the suborders Serpentes that can be distinguished from the legless lizard by their lack of eyelids and external ears. The english word snakecame from an old English Snaca. The fossils record of snakes are poor because snake skeleton are typically small and fragile making fossilization uncommon.
 There are various species of snakes, i.e. of 2700 species are their all over world. Their appearance, structure differs from one species to another. Some of their characteristics are they have slippery surface,without limb they can climb, swim and sometimes fly, some have deadly bite that can kill a human being. It cannot detect color but can see images. It flicks its tongue to gather air particle to assist in sensing odors. Out of 2700 known species each share three common traits, it has a thin, linear limbless body, eats meat and is cold blooded. Fertilization is internal in snake; as in lizards, the males have paired copulatory organs, either of which may be used in mating. Female of some species can store sperms for several years to ensure future fertilization.