The following sections of this BookRags Literature Study Guide is offprint from Gale's For Students Series: Presenting Analysis, Context, and Criticism on Commonly Studied Works: Introduction, Author Biography, Plot Summary, Characters, Themes, Style, Historical Context, Critical Overview, Criticism and Critical Essays, Media Adaptations, Topics for Further Study, Compare & Contrast, What Do I Read Next?, For Further Study, and Sources.
(c)1998-2002; (c)2002 by Gale. Gale is an imprint of The Gale Group, Inc., a division of Thomson Learning, Inc. Gale and Design and Thomson Learning are trademarks used herein under license.
The following sections, if they exist, are offprint from Beacham's Encyclopedia of Popular Fiction: "Social Concerns", "Thematic Overview", "Techniques", "Literary Precedents", "Key Questions", "Related Titles", "Adaptations", "Related Web Sites". (c)1994-2005, by Walton Beacham.
The following sections, if they exist, are offprint from Beacham's Guide to Literature for Young Adults: "About the Author", "Overview", "Setting", "Literary Qualities", "Social Sensitivity", "Topics for Discussion", "Ideas for Reports and Papers". (c)1994-2005, by Walton Beacham.
All other sections in this Literature Study Guide are owned and copyrighted by BookRags, Inc.
In environmental science, the term usually refers to the hydrocarbons, especially those found in air pollution. In 1988, the five most abundant of these hydrocarbons in urban air were isopentane, n-butane, toluene, propane, and ethane; each of these compounds has unburned gasoline as its primary source. In the presence of sunlight, hydrocarbons react with ozone, nitrogen oxides, and other components of polluted air to form compounds that are hazardous to plants, animals, and humans. In 1995, volatile organic compounds ranked third behind carbon monoxide and particulate matter (which includes dust, smoke, soot, and chemical liquid droplets from various sources) and just above sulfur and nitrogen oxides in annual pollutant emissions in the United States.