Tag : biodiversity threats

Air pollution is the presence of harmful or excessive substances in the air that we breathe. These substances, known as pollutants, can be natural (like ash from volcanoes or pollen) or human-made (like smoke from factories, car emissions, or chemicals from household products). In short: Air pollution is the contamination of the air by harmful gases, dust, or smoke that affects the health of humans, animals, plants, and the environment.