Question

how skeleton of frog and fishes differs?

Answer 1

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Some primitive fish, like sharks, have skeletons made out of a tough material called cartilage, but all the rest have bones. Fish take in oxygen from the water through gills. Amphibians were the first animals to develop legs. Frogs, toads and salamanders are amphibians.........................

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Answer 2

Answer:

Some primitive fish, like sharks, have skeletons made out of a tough material called cartilage, but all the rest have bones. Fish take in oxygen from the water through gills. Amphibians were the first animals to develop legs. Frogs, toads and salamanders are amphibians.........................