The major challenges to water and ion balance for most marine vertebrates are _____.

+2 votes

 

  

gaining water and ions from the environment

  

gaining water from and losing ions to the environment

  

losing water and ions to the environment

  

losing water to and gaining ions from the environment

 

asked Dec 31, 2012 in Biology by anonymous
    

1 Answer

+1 vote

 

losing water to and gaining ions from the environment

 

answered Dec 31, 2012 by LeafHy ~Expert~ (895 points)

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