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Image: How Cockroaches Work

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How Cockroaches Work

Submitted: Apr 23, 2008 - Entomologists estimate there are between 5 and 10 million species of insects on Earth. But if asked which insect they hate the most, many people would choose just one -- the cockroach.

Whether they're digesting wood pulp in a rainforest or hiding under a refrigerator, cockroaches are fascinating. They're primitive insects -- they existed millions of years before dinosaurs did and have evolved…

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