What is the evidence that solar radiation is less important to global warming than the increase in greenhouse gases?
(a) Temperatures have increased more in the summer than the winter.
(b) Temperatures have increased more in the winter than the summer.
(c) Temperature increases have been uneven across the globe.
(d) There is an historic correlation of CO₂ and temperature.
(e) There is a lack of temperature change in some areas.

Studies have revealed that since 1975 there is a historic correlation between CO2 emissions concentration and Earth’s surface temperature. Compared to solar radiation it’s evident that such irradiance changes very slow. The trend regarding CO2 emissions concentration has raised pretty high and in consequence of this fact the impact on global temperature is as well tangible given that warming is evident worldwide.