Carbon monoxide is also one of the chemicals that create ozone pollution and urban smog.
Suppose you want to analyze the overall health risks of smog in a city, but you know that smog levels vary among neighborhoods, and that people spend varying amounts of time outdoors.
"The entire time I was there, I didn't see the sun once; the skies were perpetually covered in smog," he said.
Conclusion The main risk factors of nasopharyngeal carcinoma in China was history of chronic rhinitis, NPC family history, intake of preserved food, and household smog; while intake of fresh vegetable and fruit was a protect factor.
Methane smog enshrouds Titan, Saturn's mysterious moon.
The lyrics and imagery speak of over-fishing, deforestation, and smog.
Moscow's air is polluted at the best of times, but this smog, heavy with carbon monoxide, makes breathing difficult.
Irritative bronchitis: Irritative bronchitis (also called industrial or environmental bronchitis) may be caused by exposure to various mineral and vegetable dusts as well as cigarette smoke and smog.
The smog persisted throughout the day.
Ginkgoes also stand up well to smog, road salt and pests.
There was also smog, or haze, or some version of atmospheric opaqueness for which the International Olympic Committee has yet to invent a word.
And so, you make not only water vapor, nox but you make some nitrous oxides, nox, or nox as it is known, and this is the precursor to smog.
Second, cooling a city by a few degrees dramatically reduces smog.
The local authority of Tosontsengel administrative center, Zavkhan Province, has decided to evacuate children and seniors because the smog is a threat to human health.
Black smog reduced visibility to about fifty yards.
Beyond the heating effects of carbon dioxide and the other greenhouse gases, there are the effects of converting land from one use to another and filling parts of the sky with soot and smog.
The L. A. Dept. of Power and Water introduced an electric-powered truck in 1967 in hopes of reducing smog.
So there will be little respite from the dense data smog, which some researchers fear may be poisonous.
When the driver stopped in the outlying village of Liucunzhen, locals told us they lived most of their lives in smog.
Those atoms can contribute to smog formation in coastal areas.
The river appears as if enveloped in smog.
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