Final answer:
True, mildew can occur due to humidity, which creates ideal conditions for its growth in moist environments indoors. High humidity inhibits evaporation, leading to potential health risks from indoor mold and mildew exposure.
Step-by-step explanation:
The statement that mildew can occur due to humidity is true. High levels of humidity can inhibit the evaporation of moisture, creating an environment where mold and mildew can thrive, especially in areas like showers, basements, and other damp places within a home. This is particularly problematic after events that leave homes damp, such as floods and hurricanes. Furthermore, increased humidity indoors can lead to a higher concentration of indoor air pollutants, including mold, which may pose various health risks to the occupants. It is important to manage indoor humidity levels to minimize the growth of mildew and mold.