Which is not bio-waste?

  1. Paper
  2. Vegetable peels
  3. Cow-dung
  4. Slag
Anurag Mishra Professor Asked on 17th December 2015 in Environment Science.
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  • 1 Answer(s)

    Answer: (4) Slag 

    Anurag Mishra Professor Answered on 17th December 2015.
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