Question

Why do fish and frogs lay hundreds aggs but a hen lays only one egg at a time?

Answer 1

In frogs and fishes , fertilization is external fertilization so chances of fertilization is less and they r vulnerable to predators so they lay more eggs

Answer 2

Frogs and fish mostly lay their eggs in water,larvae produced by them could  flow along with water so to protect their generation they have to lay thousands of eggs at a time while hens lay eggs on land,so they do not need to lay many eggs.

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