Sound becomes hazardous noise pollution at decibels? A. Above 120 db B. Above 80 db C. Above 50 db D. Above 30 db

The correct answer is: A. Above 120 db

Sound becomes hazardous noise pollution at decibels above 120. This is because sound at this level can cause permanent hearing damage.

Sound is measured in decibels (dB). The human ear can hear sounds between 0 dB and 120 dB. Sounds below 30 dB are generally considered to be quiet, while sounds above 85 dB can cause hearing damage if exposure is prolonged.

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For example, a gunshot can produce sound levels of up to 140 dB. If you are exposed to a sound of this level for just one second, it can cause permanent hearing damage.

It is important to protect your hearing from hazardous noise pollution. If you are exposed to loud noises, wear earplugs or earmuffs to protect your ears. You should also avoid listening to loud music or using power tools for long periods of time.

Here is a brief explanation of each option:

• A. Above 120 db

Sound becomes hazardous noise pollution at decibels above 120. This is because sound at this level can cause permanent hearing damage.

• B. Above 80 db

Sounds above 85 dB can cause hearing damage if exposure is prolonged. However, they are not considered to be hazardous noise pollution until they reach 120 dB.

• C. Above 50 db

Sounds above 50 dB can be annoying and disruptive, but they are not considered to be hazardous noise pollution.

• D. Above 30 db

Sounds below 30 dB are generally considered to be quiet and do not pose a risk to hearing.