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- تعرف العلماء خلال القرون الوسطى على الحشرات الداجنة، كالنحل وديدان الحرير' التى تعانى من الأمراض' وقد سجلت اصابة ديدان الحرير بالأمراض فى الفترة ما بين 335 - 322 قبل الميلاد وذلك …
Is it reasonable to be like someone who cut off the branch of the tree on which he sits? A phrase that one of the scientists described is what we do as a human being from the …
What may you benefit when knowing the principles of astronomical physics? Since a person has been overwhelmed by the owner of the mind and throughout all times and ages, it is …
How can we make smart decisions on our increasingly -based life, if we do not understand the difference between false science and real science? Carl Sagan''s prominent writer and …
Every year, nasal viruses and influenza spread all over the world, leaving hundreds of millions suffering from colds and coughing in their wake. Although she kills a number of …
British scientist Stephen Hawking departed on March 14, 2018, leaving behind a world of research, scientific hypotheses, and an age that he had in the search for convincing answers …
In this book, the AUTHOR is trying to rearrange the chapters of the story and correct the misconceptions and know these organisms closely through the latest findings of fossil …
يهدف هذا الكتاب إلى توفير مرجع عربي في الكيمياء العضوية لطلاب السنة ثانية هندسة الطرائق و طلاب الجذع المشترك طب و صيدالة.يتضمن الكتاب اثناعشرة موضوع يشمل التماكب, الافعال …