Oleg Zabluda's blog
Monday, April 10, 2017
 
What is the evolutionary benefit or purpose of having periods?
What is the evolutionary benefit or purpose of having periods?
https://www.quora.com/What-is-the-evolutionary-benefit-or-purpose-of-having-periods/answers/4625918

menstruation
https://www.quora.com/What-is-the-evolutionary-benefit-or-purpose-of-having-periods/answers/4625918

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