9 lessons • 1h 38m

People and Environment- Pollutants (in Hindi)

13m 21s

Biodegradable and Non Bio Degradable Pollutants (in Hindi)

8m 24s

Agents of Pollution (in Hindi)

8m 29s

Effects of Pollution (in Hindi)

11m 18s

Atmosphere and Air pollution (in Hindi)

11m 02s

Primary and secondary Air Pollutants (in Hindi)

14m 57s

Pollution and their effect on Human being (in Hindi)

12m 03s

Environment MCQs (in Hindi)

8m 46s

Light Pollution and effects and Steps taken (in Hindi)

10m 14s

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