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What is the major advantage of three-tire vermi-culture technology?

(a) It can be applied to both solid and liquid wastes

(b) It cannot be applied to both solid and liquid wastes

(c) It involves chemical treatment

(d) It can degrade organic wastes

I had been asked this question in a national level competition.

Asked question is from Aerobic Treatment of Solid Wastes topic in portion Biotechnology for Solid Waste Management of Environmental Biotechnology

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Right option is (a) It can be applied to both solid and liquid wastes

Best explanation: The three-tire vermi-culture technology developed by biotechnology resource center is so inexpensive with respect to the conventional method. Also, the operational costs are negligible. But the major advantage is it can be applied to both solid and liquid wastes. It doesn’t involve chemical treatment and degradation of organic wastes is not a specialty of vermicomposting.

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