Question

Why are more eggs produced during external fertilization

Answer 1

External fertilization usually occurs during spawning when the female releases the egg and the male releases the sperm in the same environment. External fertilization in an aquatic environment protects the desiccation of eggs.

Step-by-step explanation:

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Answer 2

More eggs are produced during external fertilization because both eggs and sperms are released in the environment and the probability of them fertilizing is less. So, if more eggs are produced, even if a small fraction of them fertilize, this would be enough.