The walls of the ____________ are made more or less permeable to water, depending on the need to conserve water.

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    urethra
    glomerulus
    ureter
    proximal tubule
    collecting duct

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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collecting duct
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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