Soil is a natural resource of inestimable value. It is classified as a renewable resource, but because it may take from a few hundred years to a few thousand years to be renewed, it is more accurately termed an exhaustible resource. The emphasis of this teaching unit is the importance of soil and the need and means to conserve it. The constraining…

The current energy situation in the United States is a web of complicated and related elements. This document attempts to address some of these variables in presenting interdisciplinary energy lessons taken from instructional packets previously developed by the Project for an Energy-Enriched Curriculum (PEEC). The 19 physical science lessons…

The world is faced with a variety of environmental problems. No country has escaped pollution and resource depletion. Basic ecological principles are often ignored and sometimes this contributes to ecological disasters. This volume is designed to provide basic information about the quality of the earth's land resources. The visual aids,…

Project WILD is an interdisciplinary, supplementary environmental and conservation education program which emphasizes wildlife. This document is one guide developed by Project WILD with the specific purpose of focusing on aquatic wildlife, or any wild animals that depend upon aquatic environments for survival. The book contains instructional…