The document discusses various causes and effects of air pollution. It notes that exhaust from cars and factories contributes to air pollution through smog, greenhouse gases, and acid rain. It also states that a refinery in Bosanski Brod and Sisak are major polluters, releasing sulfur dioxide into the air. The pollution destroys soil, pollutes water, and damages both animals and plants. Cutting down forests without replanting them can also increase soil erosion and disrupt natural balances.