Long-term exposure to noises at high sound level may cause temporary or even permanent [A]. Noise level is measured in [B] and the symbol of the unit is [C].

1. Identifying the Variables

   • [A]: The effects of noise exposure, specifically the type of hearing impairment that can result.
   • B: The unit of measurement used for noise levels.
   • C: The symbol that represents the unit of measurement for noise levels.

2. Relevant Concepts

   • Long-term exposure to high sound levels can lead to conditions like noise-induced hearing loss.
   • Sound levels are measured in decibels.

3. Answers

   • [A]: hearing loss (the answer emphasizes the potential effects on hearing)

Summary of Findings

Long-term exposure to high levels of noise can lead to temporary or permanent hearing loss. Noise levels are typically measured in decibels, represented by the symbol dB. Understanding these concepts is vital for assessing the impact of noise on health.