Gera, this was an analogy to your CO2 statement.. where you said that CO2 is food for plants.
CO2 is in fact used by plants, but it's also a greenhouse gas.
Are you in fact arguing that CO2 is an greenhouse gas?

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Человек, который почувствовал ветер перемен, должен построить не щит от ветра, а ветряную мельницу