Our Environment and Management of Natural Resources Class 10| Pollution| Sustainability| Ozone Layer


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  2. Sugandh Khanna

    Sir plz make more videos on explanation of bio chapters. They r very helpful to me. I have never met an enthusiastic tcher like u.. Keep teaching like this

  3. Sugandh Khanna

    Sir u r a very influential teacher I have even u have any more videos of urs on all d chapters of bio.. If u have kindly plz upload them.. I will b very thankful to u

  4. Pragya Singh

    Hello sir, how are you.. I m pragya from gonda up I wan to thank u for this video it's really helpful… I want to know that sir how the ozone layer harmful for us..???


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