Class 12th Biology NCERT Based Questions Answers
12th Biology Terminal Exam Based Extra Questions
Class 12 Science Important Syllabus Questions Answers
Is it true that if the dissolved oxygen level drops to zero the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body.
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Yes, the water become septic if the dissolved oxygen drops to zero. Organic pollution (biodegradable) is an example.