6. As shown in the chart below, natural gas has grown to encompass 38% of US electricity production in 2020, after contributing only 22% in 2007. a. What technology became viable in this timeframe that assisted this rise in the use of natural gas? (3 points) b. Which energy source is being displaced by natural gas and why? (4 points) 3% 10% 22% 3% 6% 6% 19% 49% 2007 38% 19% 22% 2020 Coal Natural gas Nuclear Hydroelectric Wind and other ren Petroleum liquids Petroleum coke Gas (Other) Other Solar www.explainthatstuff.com Woodford, Chris. (2006/2020) Power Plants. Retrieved from https://www.explainthatstuff.com/powerplants.html [Accessed Jan. 18, 2022]