Which of the following technique is environment friendly and cost effective? Options: A . &nbspBiological B . &nbspChemical C . &nbspPhysical D . &nbspCombination of physical and chemical

Which of the following technique is environment friendly and cost effective?

Question

Which of the following technique is environment friendly and cost effective?

Options:

A . Biological

B . Chemical

C . Physical

D . Combination of physical and chemical

Answer: Option A
Answer: (a).Biological

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