In recent years much has been said and written about the science of Ecology at all levels in our educational system. The study of Ecology occupies an important place in the science curriculum, if only because being concerned with all aspects of life, it impinges closely on man himself. The outstanding claim of Ecology as a branch of study is that it is concerned with living things as they really are, occupying a diversity of places and responding to one another and their physical environment in a variety of complex ways. In the present book Ecology-Basic and Applied, various biological and physical environmental aspects were considered within the ecological arena of study.