Compare the structure of larvae and adults of amphibians.

Tadpoles are morphologically similar to fish: membranes, a two-chambered heart with one circle of blood circulation, gills, a tail, an exclusively aquatic lifestyle, there is a lateral line, however, with development, the tail is reduced, limbs appear, a three-chambered heart with two circles of blood circulation, there is no lateral line, they can move on land due to skin respiration, but reproduction still occurs in the aquatic environment.

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