Environmental Science 15th Edition by Scott Spoolman,Tyler Miller

تمرين 4

What is the most threatening indoor air pollutant in many less-developed countries? What are the four most dangerous indoor air pollutants in more developed countries? Briefly describe the human body's defenses against air pollution, how they can be overwhelmed, and illnesses that can result. In the world and in the United States, about how many people die prematurely from air pollution each year?