Question
According to the WMO, by how much did CO2 concentrations
increase over the last 20 years to reach 420 ppm in 2023?Solution
The WMO reported an 11.4% increase in CO2 levels over the past 20 years, driven by fossil fuel combustion and vegetation fires, contributing to the record concentration of 420 ppm in 2023.
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A shopkeeper sells an item at ₹1500 which is marked as ₹2000. What is the discount he is offering? Â
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