What are the things outdoors that should concern me the most?
There are many sources of pollution outdoors, like gases from cars, dust from tractors, or smoke from fires. Outdoor air pollutants can weaken the protective ozone layer, create smog and acid rain, and cause changes in our climate, which lead to global warming (an increase in the earth’s average temperature). Outdoor air pollution can make you sick. It can cause your eyes and nose to burn, your throat to itch, and even breathing problems. Some chemicals found in polluted air cause cancer, birth defects, brain and nerve damage, and long-term injury to the lungs and breathing passages.
