Ο ατμοσφαιρικός αέρας αποτελείται απο 21% οξυγόνο. Τελευταίες έρευνες όμως έχουν δείξει οτι το οξυγόνο μειώνεται κατα 20 μέρη ανά εκατομμύριο τον χρόνο.
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Duration
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11 months
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11 months
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11 months
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Ο ατμοσφαιρικός αέρας αποτελείται απο 21% οξυγόνο. Τελευταίες έρευνες όμως έχουν δείξει οτι το οξυγόνο μειώνεται κατα 20 μέρη ανά εκατομμύριο τον χρόνο.