Which of the following items, if sustained for 8 hours or more, would provide permanent hearing damage in humans?
Explanation
Answer: D - All of the above. Jet engines, volcanic explosions, and jack hammers would all provide permanent hearing damage to humans if sustained for more than 8 hours.
Key Takeaway: Although not usually life threatening, intense and sustained sound, odor, and light pollution can greatly reduce the quality of humans’ lives. Noise pollution is worst in urban areas and is generally used to discuss any unwanted and harmful hearing that can cause stress or accidents. After 8 hours, noises at or above 85 decibels (jet engines, volcanic explosions, jack hammers, lawn mowers, music concerts, air raid sirens, and rifles, among other things) will cause permanent hearing damage to humans.
