Pollution de la nature

https://www.youtube.com/watch?v=tmhiglxga-4 [Animation]
https://www.youtube.com/watch?v=73sGgmZoMBQ [Animation]
https://www.youtube.com/watch?v=Yw2gcllEjTg [Pollution de la nature]
https://www.youtube.com/watch?v=sW7fxGG9cEM [eng]
https://www.youtube.com/watch?v=VPtKOrwf1h0 [evolution and pollution]
https://www.youtube.com/watch?v=DHg291KeFls [Investigating Plastic Pollution ]