Why are females more powerful and larger than males in certain species while in others they are smaller and weaker?
In: Biology
As others have said, you have to get more specific, but to phrase it in a more specific way you can ask: “In humans why are males on average larger and stronger than females.”
And I’d say a likely reason is that a 9 month gestation period is quite long relative to other animals, so that would lead to a lot of sex role differentiation before modern civilization.
Caveat: This type of evolutionary biology can slip quickly into pseudoscience. By nature you’re taking a conclusion and working backwards, but there are I think more and less plausible guesses.
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