पर्यावरण अध्ययन (EVS) सीखने की प्रक्रिया में निम्नलिखित में से किसे मुख्य माध्यम या संसाधन बनना चाहिए?

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: