- Fuel burning power plant.
- Metallurgical processes.
- Automobiles and transportation.
- Rock processing.
- Incineration.
- Pulp and paper.
- Miscellaneous: mills and pulverizing plants.

- Lung and heart disease, as well as other health concerns, are made worse by air pollution.

- Who are the vulnerable populations? 

 Some people are more sensitive to contaminants in the air than others. Children, pregnant women, elderly persons, people with pre-existing heart and lung disease, and residents of low-income neighborhoods and communities are among these categories.

- The reasons for air pollution ?

Air pollution from industrial sources, underlying health issues, poor diet, stress, and other factors...

The health effects of air pollution exposure are determined by the duration and concentrations of pollution, as well as the health state of the people impacted.

"The health effects of wildfire smoke can range from eye and respiratory tract irritation to more serious disorders, including reduced lung function, exacerbation of asthma and heart failure, and premature death. Children, pregnant women, and the elderly are especially vulnerable to smoke exposure."

Link: https://www.jacionline.org/action/showFullTableHTML?isHtml=true&tableId=tbl1&pii=S0091-6749%2804%2902266-3

- Diesel exhaust particulate matter:

DEPs (diesel exhaust particles) cause airway irritation and can aggravate or trigger asthma and allergies. DEPs, nitrogen oxides, and ozone precursors are all produced during diesel combustion, all of which are hazardous to the lungs.
As a result of the increased inflammation caused by diesel exposure, one's susceptibility to respiratory virus infections may be altered.

- Ozon:

The inflammatory effects of ozone on the respiratory system have been studied in several in vitro and animal investigations. However, the vast majority of ozone-exposure studies conducted in healthy and asthmatic people have contributed to our current understanding of how ozone causes adverse health effects.
The fact that ozone has a more dramatic effect on asthmatic patients is most likely due to persistent inflammation in the lower airways. According to most research, ozone impairs airflow in asthmatic patients more than in healthy volunteers.

 - Sulfur dioxide and nitrogen dioxide:

" Adverse health effects from other gaseous pollutants, such as SO2, nitrogen dioxide (NO2), and carbon monoxide (CO), should not be underappreciated. Recent epidemiologic studies conducted throughout the world have provided valuable insight into the associations between SO2, NO2, and CO exposure and increases in cardiopulmonary mortality, respiratory and cardiovascular hospital admissions, emergency admissions caused by stroke (NO2), and myocardial infarction (NO2 and CO)."

 -The very air we breathe is growing dangerously polluted

-The health effects of air pollution are serious – one third of deaths from stroke, lung cancer and heart disease are due to air pollution

-Air pollution is hard to escape, no matter how rich an area you live in

-Air pollution is closely linked to climate change 

-Across the world, both cities and villages are seeing toxic pollutants in the air 

 -It increases the risk of respiratory infections, heart disease and lung cancer.

Particulate matter (particle pollutants), which includes suspended solids and liquid droplets, nitrogen dioxide sulfur dioxide ozone" are the pollutants that pose the greatest harm to a person's health, according to WHO.

II. Body
1.  What is air pollution?
“Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. There are many different types of air pollutants, such as gases , particulates  and biological molecules.”

(Air pollution,From Wikipedia, the free encyclopedia)

III. Conclusion:
Concern for air pollution and its health implications continue to be a world-wide problem today.
Exposure to high levels of air pollution can cause a variety of adverse health outcomes.