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oct 23, 1958 - Karbondioksit seviyesi 315 PPM

Description:

PPM nedir?
140bin 1.5 litrelik suyu bir kaba boşaltırsak 1PPM bu kaba damlatılmış 4 damla mürekkebe eşittir.

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qqq

12 Dec 2017

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Date:

oct 23, 1958

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~ 67 years ago

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