Question

laying of eggs in amphibian and mammalia . on land or in water​

Answer 1

Answer:

Mamalia give birth to young ones but kangaroo give birth to poorly developed young one whereas amphibians lay eggs inside the water and some amphibians lay eggs outside the water with hard shell

Explanation:

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Answer 2

Answer:

amphibian lays eggs in water as the young ones have gills as their respiratory organ,in Mammalia it is lungs