What does high BOD indicate about water quality?

A. organic pollution अधिक हो सकता है / Organic pollution may be high

Step 1: Identify BOD meaning. Step 2: High BOD means microbes need more oxygen and water may have organic pollution. Step 3: Remember high BOD indicates polluted water.

Step 1: BOD meaning पहचानें। Step 2: High BOD बताता है कि microbes को ज्यादा oxygen चाहिए और water में organic pollution हो सकता है। Step 3: High BOD equals polluted water संकेत याद रखें।