An exploration of the fundamental nature of life, both as a substance and as a complex organism. Drawing on the latest scientific research, Andrews paints a vivid portrait of the mechanisms behind essential life processes, and provides insight into the relationships between different organisms and their environments. A groundbreaking work of biology and philosophy that will challenge readers to rethink their understanding of life itself.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.