Which factor puts Mexico City at risk of acid rain?
The Correct Answer and Explanation is :
One major factor that puts Mexico City at risk of acid rain is its high levels of air pollution, primarily due to industrial emissions and vehicle exhaust.
Explanation:
Mexico City, one of the largest urban areas in the world, faces significant environmental challenges, particularly air quality issues. The city’s high population density, coupled with a high number of vehicles and industrial activities, contributes to the release of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) into the atmosphere. These pollutants are critical precursors to acid rain, a phenomenon where sulfuric and nitric acids form when these gases react with water vapor, oxygen, and other trace chemicals in the atmosphere.
In Mexico City, the geographical and climatic conditions exacerbate the problem. The city is situated in a valley surrounded by mountains, which can trap air pollutants. Temperature inversions, common in the region, prevent the normal dispersion of these pollutants, allowing them to accumulate and persist in the atmosphere. This stagnation can lead to higher concentrations of acidic pollutants, which eventually precipitate as acid rain.
The consequences of acid rain are detrimental to both the environment and public health. Acid rain can damage vegetation, harm aquatic ecosystems by lowering the pH of water bodies, and contribute to the degradation of buildings and infrastructure. In Mexico City, the effects of acid rain can further stress the already challenged ecosystems and infrastructure, leading to significant long-term economic and environmental costs.
Efforts to combat air pollution in Mexico City have included stricter vehicle emission standards and the promotion of public transportation. However, the ongoing urbanization and industrialization of the region continue to pose challenges to improving air quality and mitigating the risks of acid rain. Addressing these issues requires a coordinated approach involving government policy, community engagement, and technological innovation.