Tại Sao Chúng Ta Có Răng Sữa?


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Ngày đăng: 05/08/2016

Chuyên mục: Kiến thức

What’s up with baby teeth? Do other animals have them, and what are they
good for -- other than squeezing money out of the tooth fairy? We have
the answers! Hosted by: Hank Green ---------- Like SciShow? Want to
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http://thankstank.tumblr.com Sources:
http://www.uic.edu/classes/orla/orla312/DeciduousDent.htm http://www.vivo.colostate.edu/hbooks/pathphys/digestion/pregastric/dentalanat.html
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