How do you know there was never a predator in the past 10,000 years? I'd
think the white definitely is for camouflage, since there's no worry about
being
overheated by the sun.
George S.
piers@xxxxxxxx writes:
> Perhaps this explains why polar bears are white not black - it's unlikely
> to
> be for camouflage, after all, since there's no predator to spot them, and
> the prey are under the ice, so it must be because they keep warmer that way!
> From which we can deduce that there is less heat to be absorbed from the sun
> up there than can be generated from digestion of seals.
>
> Piers
>
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