16 What do you mean amphibian? Give three characteristics of class amphibian.
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Defining characteristics of these creatures include moist, scaleless skin and the fact that they are cold-blooded. Amphibians absorb water and undergo gas exchange through their skin. There are three orders of amphibians. Urodeles have legs and a tail, such as salamanders.
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Characteristics of Class Amphibia
They are ectothermic animals, found in a warm environment. Their body is divided into head and trunk. The tail may or may not be present. The skin is smooth and rough without any scales, but with glands that make it moist.
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