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					المشاركة الأصلية كتبت بواسطة ابو بيشو
					  
				 
				Thanks a lot . This is an example to show that animals also co-operate  
This is a recent experiment to prove that .One bird cannot do what a group of birds can do. 
Thanks a lot . 
			
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 I really  appreciate your reply very much

 .
But  can you tell me which condtional
Thanks a lot