Why are so many desert animals active only at night (nocturnal)?

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    Reflection of light from the bright sun makes it too difficult for visual predators to hunt.
    The surface temperature of the ground would be too hot to walk on.
    Temperatures are lower and humidity is higher at night.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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Temperatures are lower and humidity is higher at night.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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