The decline in the eastern North American population of the monarch butterfly population since the late 1990s has been attributed to the loss of milkweed during the summer breeding season and the consequent reduction in the size of the summer population that migrates to central Mexico to overwinter (milkweed limitation hypothesis). However. in some studies the size of the summer popul... https://parisnaturalfoodes.shop/product-category/nutri-multi-for-women/