معلومات علمية مفيدة

فيديو: معلومات علمية مفيدة

Keep going معلومات ثقافية 02 يناير 2014

ـ الجزء الوحيد من جسـم الإنسـان الذي لا يصلـه الدم هو قرنيـة العين. ـ يتنفـس الإنسـان 16 مرة في الدقيقـة. ـ الأذن اليسـرى أقوى سـم...

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