Environmentaleasy · Past Paper
Which of the following can cause permanent deafness?
AContinuous exposure to 30 dB sound
BShort exposure to 60 dB sound
CContinuous exposure to 100 dB+ sound
DListening to birds chirping
✓ Correct Answer: C — Continuous exposure to 100 dB+ sound
Long-term exposure to noise levels above 85-90 dB can damage the hair cells in the cochlea, leading to hearing loss.
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