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    hi this is for my biology, any help would be appreciated, thanks.

    sea otters have a very thick, fine fur, why does this help to keep them buoyant??

    vultures that like in the dersert excrete urine onto their legs - why does this method and how, lower the birds body temperature?

    thankyou
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    (Original post by sarah_999)
    hi this is for my biology, any help would be appreciated, thanks.

    sea otters have a very thick, fine fur, why does this help to keep them buoyant??

    vultures that like in the dersert excrete urine onto their legs - why does this method and how, lower the birds body temperature?

    thankyou
    Traps a layer of air inside the fur.

    Urine evaporates, therefore reduces body temperature, as blood pumps through the cool leg.
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    (Original post by 2776)
    cool leg.
    :cool:
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    (Original post by sarah_999)
    vultures that like in the dersert excrete urine onto their legs - why does this method and how, lower the birds body temperature?
    Urine contains water. Water has a high latent heat of vaporisation i.e. it takes a lot of thermal energy to evaporate 1kg of water. Therefore the heat energy from the vulture is used to evaporate the water in the urine, effectively acting as a coolant.
 
 
 
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