'स्कूलों और घरों में स्वच्छता बनाए रखना' जैसी गतिविधियां निम्नलिखित में से किस श्रेणी के अंतर्गत आएंगी?

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: