وفّر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

مجرة
هارفارد بزنس ريفيو
إم آي تي تكنولوجي
العلوم للعموم
نفسيتي
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اشترك الآن
اشترك الآن
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عذراً، هناك مشكلة في البريد الالكتروني

إغلاق 
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الطب

تاريخ طبيعي |  Natural history

26 أبريل 2020


وهو فرع من العلوم يهتم بدراسة الكائنات الحية وتفاعلها مع بيئاتها وتغيراتها حسب الاجيال وحسب توزعها الجغرافي.


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