Final answer:
Factories burning fossil fuels are a major contributor to air pollution, releasing harmful pollutants into the atmosphere.
Explanation:
The primary source of air pollution is factories, which burn fossil fuels in power plants and machines, contributing to the release of harmful pollutants into the atmosphere.
Fossil fuel burning in factories leads to the generation of Nitrogen oxides, sulphur dioxide, and ozone pollution, along with other primary pollutants emitted directly from sources like automobile exhausts or natural events.
Air pollution also arises from other sources like mobile sources (vehicles) and natural events (volcanic eruptions, dust storms), but factories burning fossil fuels stand out as a significant contributor to air pollution.
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