Major effects on humans include Los Angeles- and London-type smog, along with what two pollutants?

The correct answer highlights the significant contributors to air pollution that are prevalent in urban environments experiencing smog. Los Angeles- and London-type smog are primarily characterized by the presence of sulfur dioxide and particulate matter, which arise from emissions related to industrial activity and vehicle exhaust.

Sulfur dioxide is a potent air pollutant produced from the burning of fossil fuels, particularly coal and oil, and is a key factor in the formation of acid rain and respiratory issues in humans. Particulate matter encompasses a variety of tiny solid or liquid particles suspended in the air, which can penetrate the respiratory system and lead to various health problems, including asthma and cardiovascular diseases.

In this context, understanding the dual role of sulfur dioxide and particulate matter is essential since they are both major contributors to smog formation, particularly in cities like London prior to significant regulatory measures. This pairing illustrates how industrial emissions significantly impact air quality and public health, making it imperative for sanitarians to monitor and manage these pollutants effectively.