जीवाश्म ईंधन के अपूर्ण दहन से मुख्य रूप से कौन सी विषैली गैस उत्सर्जित होती 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: