प्राकृतिक आपदा या संघर्ष के कारण अपने दोनों जैविक माता-पिता को स्थायी रूप से खो देने वाले बच्चे को क्या कहा जाता है?

Prolonged occupational exposure to excessive noise from heavy machinery without hearing protection causes noise-induced hearing loss. Excess noise is categorized as a:

Long-term exposure to indoor air pollutants, such as smoke from burning biomass fuels, significantly increases the risk of developing chronic respiratory conditions like: