You left out:
6. Carbon dioxide is a trace element making up less than 0.04% (that’s 400 parts per million) of the atmosphere.
6. Carbon dioxide is a trace element making up less than 0.04% (that’s 400 parts per million) of the atmosphere.
You left out
7. Man is responsible for just 3.4% of that 0.04% meaning that the total amount of CO2 In the atmosphere due to man stands at just 0.00137% (3.4% of 0.04% = 0.00137%)