पर्यावरण अध्ययन की प्रकृति को निम्नलिखित में से किस पद द्वारा वर्णित किया गया है? A. बहुविषयक (Multidisciplinary) B. एकीकृत (Unified) C. एकीकृत (Integrated) D. एकाकी (Solitary)

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: