"The present era of industrialization and globalization has added a lot of comfort
and luxury to human life but has also led an alarming situtaion of environmental
degradation. Recently, it has been established by the Intergovernmental Penal on Climate
Change (IPCC) that the present climate change is mainly due to man-made air pollution
which is contributed by the combustion of fossil fuel and biomass during the industrial,
vehicular and domestic activities. The pollutants emitted from such activities have both
short as well as long term impacts on various atmospheric processes including cloud
modification, affecting monsoon and hydrological cycle. The atmosphere of the earth is
being polluted with `greenhouse gases' which in turn affect the climate globally. The
dominant greenhouse gases include water vapours, carbon dioxide, methane and nitrous
oxide. The increase in the levels of carbon dioxide enhance the atmospheric temperature
and ultimately cause global warming which is responsible for rapid melting of glaciers.
Climate change is now recognized as one of the greatest environmental threats to
biodiversity as a number of plant and animal species has been extinct and many others are
at the verge of extinction. Although, extinction is a natural process, the present
elimination of species is due to human induced habitat destruction.
The loss of biodiversity ecosystem will immensely effect the present and future
generation of living beings, as the species lost today may have food, medicinal and
industrial value presently not known. The purpose behind the publication of this book is
to make a general and scientific awareness among the public, students, researchers and
scientists regarding eco-friendly use of the bio-resources, to save our environment.
Public awareness coupled with government policies will definietly reduce various types of
pollutions and therefore biodiversity loss on the earth."