Which of the following preservation techniques is primary used to prevent microbial spoilage when preparing Amla Murabba (Indian gooseberry sweet preserve)?

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: