Lesson 7 of 9 • 8 upvotes • 8:04mins
Causes,effect and control of marine pollution
9 lessons • 1h 18m
Water Pollution Basic Concepts (in Hindi)
7:38mins
Organic Pollutants (in Hindi)
10:02mins
Biological Oxygen Demand (in Hindi)
10:07mins
Pesticides (in Hindi)
9:54mins
Persistent Organic Pollutants (in Hindi)
8:23mins
Thermal pollution
8:13mins
Marine pollution
8:04mins
Ground water pollution
7:53mins
Wastewater treatment
8:26mins