how we use energy We do not create energy but transform it from one form into another These transformations should be done as efficiently as possible since natural resources are limited These issues include science but political and economic considerations as well ID: 183374
Download Presentation The PPT/PDF document "This unit deals with one of the most pra..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
