ahlam1399
10-08-2014, 10:30 AM
http://i.ytimg.com/vi/rwA1QVsbD6g/default.jpg (http://www.youtube.com/watch?v=rwA1QVsbD6g&feature=youtube_gdata)
Why Do Leaves Change Color and Fall? (http://www.youtube.com/watch?v=rwA1QVsbD6g&feature=youtube_gdata)
They're pretty to look at, sure -- but the changing leaves you in autumn is really a striking example of nature taking extreme measures to protect itself. Hosted by: Michael Aranda ----------...
From:SciShow (http://www.youtube.com/channel/UCZYTClx2T1of7BRZ86-8fow)
Views:33159
http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_half_11x11.gif
1961ratings
Time:02:12More inEducation (http://www.youtube.com/videos?c=27)
أكثر... (http://www.youtube.com/watch?v=rwA1QVsbD6g&feature=youtube_gdata)
Why Do Leaves Change Color and Fall? (http://www.youtube.com/watch?v=rwA1QVsbD6g&feature=youtube_gdata)
They're pretty to look at, sure -- but the changing leaves you in autumn is really a striking example of nature taking extreme measures to protect itself. Hosted by: Michael Aranda ----------...
From:SciShow (http://www.youtube.com/channel/UCZYTClx2T1of7BRZ86-8fow)
Views:33159
http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_full_11x11.gif http://gdata.youtube.com/static/images/icn_star_half_11x11.gif
1961ratings
Time:02:12More inEducation (http://www.youtube.com/videos?c=27)
أكثر... (http://www.youtube.com/watch?v=rwA1QVsbD6g&feature=youtube_gdata)