The correct answer is D. Greenland smog.
Greenland smog is a type of smog that occurs due to low temperature and has a reducing environment. It is caused by the emission of sulfur dioxide and nitrogen oxides from power plants, factories, and vehicles. These pollutants react with water vapor in the atmosphere to form sulfuric acid and nitric acid, which then fall to the ground as acid rain.
Greenland smog is a major environmental problem in Greenland. It can damage crops, forests, and lakes, and it can also harm human health. The smog can also cause acid rain, which can damage buildings and infrastructure.
The other options are incorrect.
- Los Angeles smog is a type of smog that occurs due to high levels of ozone and other pollutants in the atmosphere. It is caused by the emission of hydrocarbons and nitrogen oxides from cars and other vehicles.
- Photochemical smog is a type of smog that occurs due to the reaction of sunlight with pollutants in the atmosphere. It is caused by the emission of hydrocarbons and nitrogen oxides from cars and other vehicles.
- London smog is a type of smog that occurs due to the emission of coal smoke and other pollutants in the atmosphere. It is caused by the burning of coal in power plants and factories.