لماذا لا تستطيع الحيوانات الوقوف على قدمين مثل الإنسان؟

08 مارس 2013

لأن تركيب أجسامها وهيكلها العظمي يختلف عنه عند الإنسان، وبالتالي لا تستطيع المشي الا على اربع ارجل. انظر الى الصورة ولاحظ الإختلاف الكبير في تركيب الهيكل العظمي.

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