Ozone layer depletion. ओजोन परत क्षरण, कारण, प्रभाव, नियंत्रण। ओजोन छिद्र।

[@chanchalkushwah6400]

Wonderful 😊 explain kra h ..itna clear explanation kiya hai. .ki pdne mein ..or jda mja ara hai ...! Or itne ache tarike se ...

[@lalitaaggarwal1838]

Thanku sir for your teaching

[@ManjeetSingh-dl3xx]

Wonderful session

[@aadarshkedar8036]

वो😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😮😂😂😂😅😅😅😂😮😂😅😂😅😂😅😂😂😅

[@satishbaishsb8171]

Thank you sir

[@geetsongs526]

Always u genius Sir 😊🙏

[@studydostkushwahasir]

Thank you so much 😀

[@rajeshsinghpaikar4684]

Nice sir jii

[@studydostkushwahasir]

Thanks

[@aashuedits]

Sir me biology padhna chaata hu apse kya apka number mil sakta h kya

[@studydostkushwahasir]

keep watching

[@scienceguruchauhansir5088]

Mere chenal par pdh skte ho
Science guru chauhan sir search kro