The study of post-reproductive lifespan has been of interest primarily with regard to the extended post-menopausal lifespan seen in humans. This unusual feature of human demography has been hypothesized to have evolved because of the "grandmother" effect. or the contributions that post-reproductive females make to the fitness of their children and grandchildren. While some correlative... https://www.fitnessgravesyardes.shop/product-category/display-cap/