This booklet on ecosystems considers time, space, and spirit. Time refers to a sense of history; space refers to geography; and spirit refers to lfe and thought. Several chapters on the history and concepts of ecology, a time line related to the concepts, a map of the important geography related to these concepts, a glossary of important terms,…

Humans have a large advantage over other life forms on earth in that they have been able to use their superior hand and brain power to invent ways to harness energy resources. The discussion in this booklet considers time, space, and spirit. Time refers to a sense of history; space refers to geography; and spirit refers to life and thought.…