Acid Rain| Atmospheric Pollution| AP Environmental science| Khan Academy

[@cont1nental9]

Your vids always help me out.

[@davidsweeney111]

this series of environemnt related videos is really interesting!

[@sivakalyani3976]

🧡

[@Bayar1010]

Thank you for providing this content for free! @khanacademy Would love to work for you guys one day!

[@wajihalearningacademy]

interesting videos

[@VENKATESHBadam]

Anybody know which acid called king of the chemical

[@蜜糖曼卡布橙]

thanks！

[@sidduhosamani9255]

1st

[@ajay_hirve_04]

I really love it when the notification says "someone liked your comment" and "someone subscribed to your channel"....

[@Superzayed2011]

Deez

[@imjustbored4884]

Deez what sir? “Deez (this)” is a nice presentation? I’m genuinely intrigued