مخاطر ثقب الاوزون

ما هو ثقب الأوزون؟

ⴷⵔⵉⵙⵙ ⵃⴰⴼⵙⴰ الآرض 26 يناير 2013

ما هو ثقب الأوزون؟ هو فراغ في طبقة غاز الأوزون الموجودة في الغلاف الجوي والتي من وظيفتها حماية الأرض من الأشعة الض...

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