This book traces centuries of human use and abuse of forest ecosystems by discussing past decades of intense burning, grazing, and timber cutting that added to the natural acidification of the soil. Air pollutants and acids generated by industrial activities worldwide are also considered. Many forests in Europe and North America now receive as…

This teaching unit contains background information on the history of oil use and technology, suggestions for classroom activities, and a list of resources and references for elementary and secondary grades. Reproducible masters are provided showing gasoline production and major oil producers and consumers. (FG)

This teaching guide was developed for use with Energy 80 program student booklets. Although the program was designed for junior high/middle school students in science/social studies classes, it is indicated that the materials are suitable for use at higher grades and, to a lesser extent, in upper elementary grades. The first 80 pages of the guide…