NCERT Solutions For Class 12 Biology Environmental Issues Chapter 16
Madhya Pradesh Board Class 12 Biology Solutions Chapter 16 Environmental Issues By StudyEducation Topics and Subtopics in NCERT Solutions for Class 12 Biology Chapter 16 Environmental Issues : Section Name Topic Name 16 Environmental Issues 16.1 Air Pollution and Its Control 16.2 Water Pollution and Its Control 16.3 Solid Wastes 16.4 Agro-chemicals and their Effects 16.5 Radioactive Wastes 16.6 Greenhouse Effect and Global Warming 16.7 Ozone Depletion in the Stratosphere 16.8 Degradation by Improper Resource Utilisation and Maintenance 16.9 Deforestation 16.10 Summary QUESTIONS FROM TEXTBOOK SOLVED 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Ans: Domestic sewage contains four kind of impurities: (i) Suspended solids: They are soil particles such as sand and silt. (ii) Colloidal particles: They are inorganic and organic materials such as faecal matter, bacteria, paper and cloth. (iii) D...