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28 set 2016 ano - Global CO2 levels exceed 400 ppm at the time of year normally associated with minimum levels.[42] A 400 ppm level is believed to be higher than anything experienced in human history.[43]
Adicionado na linha do tempo:
10 dez 2019
0
0
625
2010s
Data:
28 set 2016 ano
Agora
~ 7 years and 7 months ago