Freshwater trout are urinating all of the time and producing many times their own blood volume over the course of a 24-hour day, while the desert-dwelling kangaroo rat might excrete only a few milliliters over the same time period. What do these two very different outcomes have in common?

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    Both mechanisms are attempting to regulate the water volume within the body.
    Both mechanisms are attempting to govern the levels of the same ions (e.g., Na+ and K+).
    Both mechanisms are attempting to maintain a constant level of acidity within the body.
    all of the above
    none of the above

asked May 30, 2013 in Biology by anonymous

1 Answer

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all of the above
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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