AP BIOLOGY

Detailed explanation-1: -Most amphibians breathe through lungs and their skin. Their skin has to stay wet in order for them to absorb oxygen so they secrete mucous to keep their skin moist (If they get too dry, they cannot breathe and will die).

Detailed explanation-2: -While many amphibians, including frogs, salamanders and caecilians, have smooth skin, most toads have bumpy bodies covered with raised glands, some of which produce toxic secretions. But no amphibians have scales.

Detailed explanation-3: -Moist skin has a high level of moisture in both the epidermis and dermis and can be a sign of good health and a good skincare regime but if in combination with oily skin, sometimes due to excessive sweating, is known as hyperhidrosis. Characteristics: Visibly moist. Generally good condition.

Detailed explanation-4: -What are the 7 main characteristics of amphibians? Amphibians have a backbone, are cold-blooded, need a moist place to live, can breathe air through their skin, externally fertilize their eggs, eat meat, and grow legs when they mature.