Question

what negative effect occurs when there is a decrease in air quality?
faster evaporation of water in the soil
the drying out of fertile land, resulting in dust bowls
the melting of glaciers and polar ice caps
increased illnesses that result in a decrease in population

Explanation:

Poor air quality can introduce harmful pollutants into the atmosphere. These pollutants can cause respiratory and other health - related issues, leading to increased illnesses. If the situation is severe, it can contribute to a decrease in population. Faster soil water evaporation, fertile land drying, and ice - cap melting are more related to climate change factors like temperature and precipitation changes rather than air quality directly.

Answer:

increased illnesses that result in a decrease in population