Download or read book Photosynthesis written by Alvin Silverstein and published by Twenty-First Century Books. This book was released on 2007-09-01 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains photosynthesis, the process responsible for providing the material and energy for all living things, and discusses such related issues as respiration, the carbon cycle, acid rain, and the greenhouse effect.