GMAT Critical Reasoning (CR) | Re: Acid rain, caused by high levels of sulfur dioxide and mercu

Acid rain, caused by high levels of sulfur dioxide and mercury trapped in global air currents, affects one third of China’s territory.Coal-fired power plants are notorious for emitting large quantities of thesepollutants.To combat the problem, the Chinese national government has set aggressive environmental goals for the next five years.These goals include a 20-percent improvement in energy efficiency and a pledge that, by the end of the five years, 10 percent of the nation’s energy will