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حقائق وغرائب >> عن الكائنات
لماذا يتسابق العلماء للكشف عن أسرار قرش جرينلاند؟
يحتفظ هذا القرش بأسرار الصحة وطول العمر
إن المياه الجليدية في المحيط المتجمد الشمالي والمحيط الأطلسي باردة جداً. ولكن هذه المياه يمكن أن تصل في الواقع إلى درجات حرارة أقل مما نعتقد أنه تجمد وتبقى سائلة. (1.7 تحت الصفر بدلاً من الدرجة المعروفة للتجمد وهي صفر مئوية.) وبدون أي معدات واقية، يمكن للجسم البشري أن يتحمل 15 دقيقة في هذه الدرجة قبل أن يستسلم لفقدان الوعي، و45 دقيقة قبل أن يموت. وما يزال قرش جرينلاند الذي قد يصل طوله إلى 4.60 متر، ووزنه إلى 400 كيلوجرام يستوطن هذه المياه. هذه السمكة الغضروفية التي لا يقتصر عملها على تحمل درجات الحرارة المتجمدة، فهي تقاوم الأمراض الشائعة عند البشر،…
تمت
عملية الاشتراك بنجاح
عذراً،
عذرا،أنت مشترك مسبقاً بالنشرة البريدية