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Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity, and odor.
May 13, 2024 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies over many cities, and its composition is variable.
Oct 19, 2023 · Smog is unhealthy to humans and animals, and it can kill plants. It makes the sky brown or gray. Cities located in basins surrounded by mountains may have smog problems because the smog is trapped in the valley and cannot be carried away by wind .
Sep 22, 2023 · Phivolcs and DENR clarify that the smog in Metro Manila is not caused by Taal Volcano, but by vehicular emissions. They advise people with respiratory diseases to limit outdoor activities due to poor air quality.
Sep 22, 2023 · Learn how smog and vog are formed, what they contain, and how they affect air quality in different regions of Luzon. Find out why Metro Manila experienced smog due to traffic, while Taal Volcano produced vog due to sulfur emissions.
Learn how ozone and particulate matter, the main components of smog, are formed by chemical reactions involving VOCs and nitrogen oxides in the presence of sunlight. Find out how smog affects human health, the environment, and what we can do to reduce it.
Aug 24, 2021 · Smog is a mixture of air pollutants that form ozone near the ground and affect human health and the environment. Learn how smog is produced, where it occurs, and how to recognize it.
