Characteristics of amphibians

Amphibians Amphibians or amphibians are one of the five major groups of vertebrates. They are characterized by the fact that they can live in the aquatic environment and on land. Their skin is devoid of scales and can multiply in water or on wet land. The most important categories of amphibians are frogs, And amphibian amphibians. [1] The total population is approximately 7,400 different species that live in different regions of the world. They inhabit all continents except Antarctica. Most amphibians belong to the group of frogs, Considered a kind of every three of all amphibian species in the world are currently threatened.