This topic explains the sources of air pollution — both natural sources and those caused by human activities.
Definition
Air pollution occurs when air contains harmful particles and gases. Such air is said to be polluted.
Simple explanation: Air pollution is when harmful substances get into the air.
Main Idea
Some air pollution occurs naturally. But many types of air pollution are the result of human activities.
Two main categories of sources:
- Natural sources — forest fires, dust storms, volcanoes, termites, cows, electrical discharges
- Human activities — burning fossil fuels, vehicles, factories, power plants, incineration
Simple explanation: Air pollution comes from both nature and human activities.
Core Concept
Comparison of Sources
| Type | Examples |
|---|
| Natural sources | Forest fires, dust storms, volcanoes, termites, cows, electrical discharges |
| Human activities | Burning fossil fuels, vehicles, factories, power plants, incineration |
