Use the 20-year Global Warming Potential (GWP) values in Table 12.9 to calculate an equivalent CO2, emission rate for worldwide greenhouse gas emissions as given in Table 12.1. Assume that total CFCs are divided equally among the three compouhds listed. What is the percentage contribution of actual CO2, emissions to the total equivalent CO2, ? What is the next most important greenhouse gas emission based on this analysis? How do these results compare to those using the 100-year GWP in Example 12.17