This video is about our air pollution and is says how much smoke in % the country pollute.
and there is a Powerpoint Lightshow under the video.
Powerpoint Lightshow about Pollution.ppt Size : 574 Kb Type : ppt |
|
This video is about our air pollution and is says how much smoke in % the country pollute.
and there is a Powerpoint Lightshow under the video.
Powerpoint Lightshow about Pollution.ppt Size : 574 Kb Type : ppt |
|