Answers

2014-07-26T09:31:35+05:30
Adult frogs do not have gills, the frogs are amphibians. With the help of certain blood vessels they absorb oxygen from water through their skins. Some frogs have special skins that can increase its surface area, So that it can intake more oxygen. From the watery areas where O2 is low they move to the areas where they are high.
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