Ecology is the study of the inter-relationships within ecosystems. The environment devoted crop plants is the agro ecosystem, where both animals and plants in the area are directly or indirectly influenced by each other. Ecosystems are not closed systems because there is always an interflow of matter and energy between adjacent ecosystems. The principle of the ecosystem has also brought forth very clearly that the ‘whole’ is more than the ‘sum of its parts’. The interdependence of the organism and the environment must provide the minimum requirements and nothing that is lethal.
Well-researched and informative readings are compiled in this book. General introduction; Community ecology; Community structure; Niche concept; Community development; Ecosystem ecology; Man and environment etc. are the major themes elaborately explained.

In the age of acute environmental pollution when human survival itself is at stake—real eco-social issues have become much debatable.
This book covers various such issues, discussed in scientific way such as—population; pollution; Ozone depletion; sustainable development; aircraft noise; particulars; noise pollution; climate change etc.

The succinct information contained herein will help the readers to update and sharpen their knowledge.

Energy is the very basic need of every national economy. Electricity, which is predominant form of energy used worldwide, is derived from coal, water, air and oil. All these sources of energy have adverse impact on environment.
Many vital issues pertaining to the theme are thoroughly discussed in this book. The main topics included herein are: Concepts in energy; energy statistics; thermo dynamical concepts; sources of energy; biology energy; energy sources and technologies etc.
The material extracted from diverse authoritative sources will enrich the knowledge of scholars, policy planners and administrators.

Ecological research is not only confined to mere qualitative approach but is more confined to quantitative approach. In order to have a comprehensive evaluation of an ecosystem, it becomes essential to monitor both qualitatively and quantitatively spatial and temporal variations in structural and functional attributes of environment, which may be categorized as physical, chemical and biological.
In spite of the intense efforts undertaken in recent years, our knowledge of the modes of distribution of elements within the biosphere and lithosphere has been still in a comparatively primitive state.

While carrying out environmental analysis a scientist must be able to answer various questions. The present book is designed to cover all important issues relating to the subject. Introduction; water sampling; water analysis; bacteriological parameters; soil sediment analysis; air analysis; air quality analysis etc. are the topics given scientific treatment