Some molecular studies point to amphibians descending from the lung fish, the Diponi.
Under the class Amphibia, amphibians are tetra-pod, cold blooded vertebrates without having scales. Protein is produced by the special skin of Amphibians.
Lung fish belong to the subclass of Diponi, these are living air breathing species.
It's either the tradeoffs between conservation and economic development or the potential benefit to farmers.
Because the rib muscles and diaphragm contract,increasing the lung volume
