its the best ppt on slideshare for save the mother earth..please first download it and then start the presentation on powerpoint ... it contains almost 3d materials and pictures you will love ...these pictures cant view on the site ..so please download it and then see !! i have included all the animated photos which took me hours to find on internet.. arranged step by step ...THE BEST PPT EVER.. all credits goes to me !!! if you like my ppt please subscribe and send me mails on gupta.arpit389@gmail.com