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... , bio or a bioreactor. Biogas is produced by anaerobic with anaerobic organisms or methanogen inside an anaerobic digest...

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..., the weak alkaline reacts with the acidic substance to balance the acid and alkali of the body, changes the living environment of the harmfu...

... in the stool means that there may be some kind of bleeding in the tract. It can be caused by a variety of conditions, including: polyps,...

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