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    leah's Avatar
    leah Posts: 1, Reputation: 1
    New Member
     
    #1

    Sep 13, 2004, 07:26 PM
    Efficient Gas Exchange
    How are gases exchanged in plants and mammals? Compare!
    Saker's Avatar
    Saker Posts: 35, Reputation: 1
    Junior Member
     
    #2

    Jan 2, 2005, 03:25 PM
    A case of lungs vs. stomata.

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