Please check out #38 again. I'm sure you understand the concept of a differential change versus absolute values.
A greenhouse gas, carbon dioxide traps solar heat in Earth’s atmosphere. The gas is known as the biggest contributor to global warming of the planet.
That phrase says exactly what I claimed: They are claiming CO2 (specifically implying man-released CO2) is the biggest greenhouse gas. CO2 is NEITHER the biggest GHG, nor is man-released CO2 the biggest GHG.