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April 26, 2017 02:43 am PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/cVoJ4oITwBs/a-crash-course-on-the-three-ty.html
A crash course on the three types of mammal births
In this TED-Ed video, Kate Slabosky breaks down the differences between placental, marsupial, and monotreme mammal births.
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/cVoJ4oITwBs/a-crash-course-on-the-three-ty.html
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