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The Ecosystem in the Digestive Tract
Digestive tract. (image thanks to daviddarling.info) Inside the digestive tube is a vast ecosystem where some 100 trillion bacteria live. This should not alarm you. We have been conditioned to think of...
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How Does the Digestive System Work?
Think of your gastrointestinal tract as a long, muscular tube. This tube starts at your mouth and ends at your anus, and, if you were to stretch it out to its full length, would be about thirty feet...
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