Final answer:
Several factors determine how harmful a pollutant is, including the amount of emissions, age and maintenance of the source, and the release patterns. The most common air pollutants and their health threats are also mentioned. Age, preexisting medical conditions, and individual sensitivity influence immediate reactions to pollutants.
Step-by-step explanation:
Several factors determine how harmful a pollutant is:
- The amount of pollutant emissions from a given source and the hazardousness of those emissions.
- Factors such as the age and maintenance of the source. For example, an improperly adjusted gas stove can emit more carbon monoxide than a properly adjusted one.
- Some sources release pollutants continuously, like building materials and household products. Others release pollutants intermittently, like smoking or the use of solvents in cleaning and hobby activities.
The most common air pollutants are particulate matter, ground-level ozone, carbon monoxide, sulfur oxides, nitrogen oxides, and lead. Particle pollution and ground-level ozone are the most widespread health threats.
The likelihood of immediate reactions to air pollutants depends on factors like age, preexisting medical conditions, and individual sensitivity. Some people are more at risk, such as those with heart and lung diseases, diabetics, older adults, and children.