Practice Quiz

LEED Green Associate

Category - Indoors

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According to the Environmental Protection Agency, what percentage of time do Americans spend indoors?
  1. 50%
  2. 65%
  3. 75%
  4. 90%
Explanation
Answer - D - 90% of our time is spent indoors. Indoor air quality is a significant concern because the hours spent sleeping, working in offices, or at school are added up. People on average spend the vast majority of their time indoors where they are repeatedly exposed to indoor air pollutants; therefore, improving the quality of indoor air is vital for human health.
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