CLASS 12 BIOLOGY CHAPTER 16-ENVIRONMENTAL ISSUES

Leave a Comment / Class 12 / By

Question1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Solution :The various constituents of domestic sewage are: When organic wastes from the sewage enter the water bodies, it serves as a food source for micro-organisms such as algae and bacteria. As a result, the population of …

CLASS 12 BIOLOGY CHAPTER 16-ENVIRONMENTAL ISSUES Read More »