Answers

2015-11-05T20:59:52+05:30
Frog has two respiratory system when it is in water it breathe through skin and when on land it breathe through lungs
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2015-11-06T00:26:13+05:30
frogs has two respiratory systems in it.
- when it is in water it breathe through skin and
-when on land it breathe through lungs
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