Food chain - Types of Food chain - Food web - Simple description
9:01
Functions of Ecosystem - Ecosystem services - Simple description
15:40
Sewage Treatment - Wastewater treatment - Description with diagram - Water pollution control
4:53
How Global warming causes Climate Change ? Simple description
7:11
Hotspots of Biodiversity - Criteria for Hotspots - Hotspots of Biodiversity in India - Easy to learn
7:33
Type of Pollutants - Primary and Secondary pollutants - Simple description - Easy to learn
8:02
Water (Prevention & Control of Pollution) Act - 1974 ll Simple description ll Lecture
8:07
Solar energy - Complete description - Applications - Advantages - Limitations
6:18