This multi-volume set (in 15 volumes) deals extensively with the elements, components, natural resources, physical, chemical, geological and biological aspects of environment. Each volume is a painstaking effort in the attempt to include only well-written and useful papers and articles contributed by the eminent scientists/experts of different fields providing an insight into the new and old basic concepts of terrestrial and aquatic ecosystem particularly the meaning of ecosystem evolution and on various aspects of environmental science related to conservation of aquatic environment and its resources.
The aim of this work is to provide the readers materials on the subject in a lucid and readable form so as to enable an Environmental Scientists, Zoologists, Botanists and even the common men to understand the subject properly.

In the present age of acute competitions in every walk of life the old adage ‘survival of fittest’ has apparently become a reality. Gone are the days when the degrees were enough to get a job. Now the thorough study of any subject is required to get through in any competitive examination. The objective multiple choice type questions are asked almost in all the competitions. In order to meet the increasing demand of the aspirants to equip them with ready and up-to-date knowledge, we have prepared the Data Bank on Geography. It is concise, comprehensive and dependable which has a wide coverage of the syllabus.
The proportion, of questions from Geography  in General study has get tremendous increase in the recent past. Near about 15% questions are asked from this portion. In the present data bank we have touched all the corners of syllabus as well as the latest pattern of questions asked in UPSC, SSC, LIC, GIC, CDS, NDA and other central/state level examinations. We have taken utmost care in preparing the questions with particular gradation and level of the various examinations.
Constructive criticism and valuable comments from actual users are welcome for further improvements in the subsequent edition of the book.

As environment and development go together, we cannot stop one for the other. Thus, to a great extent Environmental Crisis is the outcome of developmental processes and activities. The environmental crisis could be better handled by protection of natural resources and environment from pollution in the new millennium only by administrative, legislative, scientific and judicial measures and by living with nature.
The present book contains well researched articles, penned by experts in the field. Organized under six sections, namely – Forestry, biodiversity and conservation; Water contamination and fisheries; Microbiology and biochemistry; Ecology and environmental sciences; Appropriate technology; and Abstracts, this book contains 28 articles besides abstracts etc.
Definitely, this will serve as useful and informative reference work to academics, environmental scientists, policy planners and other in the field.