Soilborne pathogens can devastate crops, causing economic losses for farmers due to reduced yields and expensive management practices. Fumigants and fungicides have harmful impacts on the surrounding environment and can be toxic to humans. Therefore, alternative methods of disease management are important. The disease suppressive abilities of…

Students examine the bacterial expansion pattern and attempt to relate what they discover to expanding powers of two. They also relate what they see and discover to increasing living space requirements in a world of infinite space and finite space to discover that living space decreases as a function of one over expanding powers of two. The…

Describes the nuclear fuel cycle and the environmental and social problems which might result from United States or world dependence on nuclear power. (This is a continuation of SE 514 938.) (LS)

Describes screening systems for environmental mutagens, characteristics of the ideal screening system, characteristics of currently employed screening systems, correlative information required for decision making, and application of data to human populations. (GS)

This agriculture extension service publication from Pennsylvania State University is a handbook for the water body manager. The bulk of the contents deals with aquatic plant control. The different types of aquatic plants, their reproduction and growth, and their role in the ecology of the water body are introduced in this main section. Also, the…

This book allows the reader to team teach with a science specialist to drive home key library and media curriculum goals. Eight detailed chapters provide background and complete lesson plans that cover both library and general science skills and benchmarks. Included are reproducible student worksheets, tools for assessment, and a suggested…

The mosquito control projects presented in this manual were prepared from an educational viewpoint and are intended for use by students in 4-H and Scouts and as a supplement to high school and college biology course work. The major emphasis of the projects is on integrated pest management, an approach utilizing cost-effective control methods which…

Contends that the example of mercury poisoning in Minamata, Japan can be used as a paradigm for teaching ecology and science-and-society issues. Discusses the history and science of the pollution and poisoning, and considers the social and cultural consequences of the incident, some aspects of causation and responsibility, and some aspects of…