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  5. Wastewater Story

7th Class Science Wastewater Story Question Bank Wastewater Story

  • question_answer
    In vermi-processing toilet the human excreta is treated by

    A) Redworm                    

    B) Tapeworm

    C) Earthworm      

    D) Roundworm

    Correct Answer: C

    Solution :

    Earthworm                             


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