https://www.khanacademy.org/science/revision-up-science-class-6-full-term/x00110b31861f2508:week-4/x00110b31861f2508:nature-s-treasures/v/air 2026-03-27T05:00:18.38177999Z Air: Its composition and Air Pollution Gain insights about the composition of air and the causes of air pollution. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Air: Its composition and Air Pollution Gain insights about the composition of air and the causes of air pollution. https://cdn.kastatic.org/ka-youtube-converted/rJIfJN6jdBo.mp4/rJIfJN6jdBo.mp4 335 Air https://www.khanacademy.org/science/exam-preparation-class-6th/x196eb96f0f1caea0:week-3/x196eb96f0f1caea0:air/e/air-6th 2026-04-08T00:54:09.631945657Z Air Let's practice! vibhor exercise