Anglų skaidrės. Air pollution. What is air pollution. Air supplies us with oxygen which. Is essential for our bodies to live. Outdoor air pollution. Smog. Cities are often centers of these. Types of activities. Acid rains. The effects of acid rain on the. Environment can be very serious. Greenhouse. Carbon dioxide is produced. When fuels are burned. Hole in the ozone layer. Indoor air pollution. Health effects. Prevention.