Answers

2015-07-12T14:09:58+05:30
The frog has three respiratory system's on its body, which help it exchange gases from its environment/surroundings.
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2015-07-12T14:57:10+05:30
I think that frog has two respiration systems like when frog is in the water it take the desolved oxygen from the water by skin,and when it is on the land it take the oxygen by lungs.
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