It can also increase the risk of premature mortality in elderly and ill persons. Traffic on unpaved roads, windblown dust, construction and demolition are all major contributors. Greenhouse gases trap heat from the sun in the Earth's lower atmosphere, causing temperatures to rise, a process known as global warming. The average car releases five tons of carbon dioxide a year. ACID RAIN Automobiles emit ten percent of the nitrous oxides which contribute to acid rain.
Acid rain causes acidification of rivers and lakes, damages tree foliage and degrades soil quality.
Copyright 1999, B.S.I., Inc.