निम्न में से जल की BOD को बढ़ात – McqOptions

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1.	निम्न में से जल की BOD को बढ़ाता है -
A.	शैवाल
B.	मिटटी
C.	शर्करा मिल के अपशिष्ट
D.	जलीयपौधे
Answer» D. जलीयपौधे

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