निम्नलिखित में से किस जलीय क्षेत्र में आमतौर पर खारे पानी (ब्रैकिश वाटर) के पारिस्थितिकी तंत्र पाए जाते हैं?

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: