Saturday, February 11, 2012

You've seen the respiration system of human in one of the earlier post, this is a video on respiration system in fishes.



Here is one on amphibians, just for extra information.

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1 comment:

  1. AnonymousFebruary 12, 2012 at 9:54 PM

    Mrs Wong can i ask you a question how do they know how our human system look like can you answer me because i am curious

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