Describe the sources of air pollution and its effects on organisms.

(N/A) Air pollution is the presence of harmful substances in the atmosphere that negatively impact living organisms and the environment.
$1$. Sources of Air Pollution:
- Natural sources: Volcanic eruptions,forest fires,and dust storms.
- Anthropogenic sources: Burning of fossil fuels in industries and automobiles,thermal power plants,smelting operations,and agricultural burning.
$2$. Effects on Organisms:
- Human Health: Particulate matter $(PM_{2.5})$ can penetrate deep into the lungs,causing respiratory issues,inflammation,and damage to the cardiovascular system.
- Plant Health: Air pollutants like sulfur dioxide $(SO_2)$ and ozone $(O_3)$ can cause chlorosis,necrosis,and reduced growth rates in plants.
- Ecosystems: Acid rain,caused by $SO_2$ and $NO_x$,alters soil pH and harms aquatic life in lakes and streams.