I:
|
Even a brief exposure to an extremely high sound level of 150 dB may damage ear drums and permanently impair hearing ability.
|
II:
|
Noise also causes sleeplessness, increased heart beat, altered breathing pattern, thus leading to considerable stress in humans.
|
1. | Glasgow | 2. | Sharm el-Sheikh |
3. | Doha | 4. | Paris |
1. | radioactive wastes |
2. | genetically modified hazardous microbes |
3. | methyl isocyanate gas |
4. | chlorofluorocarbons |