No its not that simple. Its a climate system that is dynamic with all kinds of positive and negative feedback loops. It is a complex If it were that simple how come all the climate models are WRONG? Second, it has been proven through ice core samples that increases in CO2 LAGGED increases in temp. Do you understand what that statement implies?
Silly person. Somehow you think by asking the same question over and over again you might appear intelligent. One must add reading comprehension skills to the list of your shortcomings.
Yes, it is that simple. If CO2 levels go up 40% the earth WILL warm, all else being equal. There is little that would prevent that from happening and nothing is, thus the world is warming. CO2 acts as the earth's thermostat. And yes,in the past rising temps caused CO2 to rise, because it outgasses as the ocean warms, then this outgassed CO2 leads to further warming in what is called a positive feedback loop. Today, CO2 is rising because of man's emissions which is then causing warming. So temps can lead CO2 and CO2 can lead temps. How many times does this simple science have to be explained to you? Are you one of those special class kids? lol