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    What pesticide had a thining effect on eggshells, nearly causing the peregrine falcon's extinction?

    Question #72089. Asked by WyattKenneth06. (Nov 07 06 10:00 AM)


    smartie806

    		DDT

    http://en.wikipedia.org/wiki/Peregrine_falcon

    Nov 07 06, 10:06 AM
    skysmom65

    		The Peregrine Falcon became endangered because of the overuse of pesticides, during the 1950s and 1960s. Pesticide build-up interfered with reproduction, thinning eggshells and severely restricting the ability of birds to reproduce. The DDT buildup in the falcon's fat tissues would result in less calcium in the eggshells, leading to flimsier, more fragile eggs. In several parts of the world, this species was wiped out by pesticides.

    http://www.answers.com/peregrine%20falcon

    Nov 07 06, 10:10 AM

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