According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions ?
- A. Locomotives using fossil fuels
- B. Ships using fossil fuels
- C. Extraction of metals from ores
- D. Power plants using fossil fuels
Answer: D
Explanation
According to the Environmental Protection Agency (EPA), the largest source of sulfur dioxide (SO2) emissions into the atmosphere is the burning of fossil fuels, particularly coal, by power plants and other industrial facilities. While other sources like ships, locomotives, and metal extraction processes also contribute to SO2 emissions, their collective impact is significantly less than that of fossil fuel-fired power generation. This question assesses knowledge of major air pollutants and their primary sources, a key topic in environmental studies and current affairs.