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Ecosystem engineers

Lowly earthworms keep house, sequester seeds

3:13pm, June 27, 2008

Unlike Richard Scarry’s Lowly Worm, real worms don’t drive cars or go to school. But the wriggly creatures appear to live a more purposeful life than previously thought. Earthworms deliberately gather and bury ragweed seeds from around their burrows, reports a new study in the Journal of Applied Ecology.

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