How can an egg form a fully formed animal outside the womb but we can’t do the same with a premature human infant?

Question

How can an egg form a fully formed animal outside the womb but we can’t do the same with a premature human infant?

In: 5

Answer 1

Because humans are mammals and part of what makes mammals that designation is the internal gestation.

Birds and reptiles and humans don’t have a lot in common. Our bodies have all evolved to meet different needs, and as such, they have different functions.