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Leach and Leech: Answers to Practice Exercises

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Answers to Practice Exercises: Leach and Leech

(a) "It's not pollution that makes the water so black; tannic acid naturally leaches into the river from cypress and pine trees growing along the shoreline." (Bruce Hunt)

(b) In modern medicine, leeches are used in reconstructive surgery to provide a vacuum effect that helps stimulate blood circulation.

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