Which of the following are characteristics of the discussion method? A. Categorizing students based on ability. B. Improving writing skills of students. C. Involving interchange of ideas among peers. D. Enhancing self-confidence in students. Choose the correct option:

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: