Showing all 10 books
Water pollution is a major global problem which requires ongoing evaluation and revision of water resource policy at all levels. It has been suggested that it is the leading worldwide cause of deaths and diseases and that it accounts for the deaths of more than 14,000 people everyday. An estimated 700 million Indians have no access to a proper toilet, and 1,000 Indian children die of diarrheal sickness every day. Some 90% of China's cities suffer from some degree ...
Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or non-point source ...
Biotechnology is the application of scientific techniques to modify and improve plants animals and microorganisms to enhance their value. Agricultural biotechnology is the area of biotechnology involving applications to agriculture. Agricultural biotechnology has been practiced for a long time as people have sought to improve agriculturally important organisms by selection and breeding. An example of traditional agricultural biotechnology is the development of ...
This introduction to Global Climate Change explains very briefly what has been happening to the world's climate and why, and what is projected to happen in the future. While this report focuses on climate change impacts in the United States and other countries in the world, understanding these changes and their impacts requires an understanding of the global climate system. Many changes have been observed in global climate over the past century. The nature and ...
Air pollution occurs when the air contains gases, dust, fumes or odour in harmful amount. That is, amounts which could be harmful to the health or comfort of humans and animals or which could cause damage to plants and materials. The substances that cause air pollution are called pollutants. Pollutants that are pumped into our atmosphere and directly pollute the air are called primary pollutants. Primary pollutant examples include carbon monoxide from car ...
The depletion of biodiversity is an alarming problem all over the country. The world conservation strategy suggests that the initial effort of biodiversity conservation should aim at establishment and maintenance of a network of protected area systems by making policy changes involving local people in the protected areas management and mobilising financial resources for their conservation and protection. The problem of biodiversity conservation has become a ...
At present it is a fact that changes in our living environment are much rapid than the progress of the human health protection techniques because we know the organism environment relationships only superficially. The rate of environmental changes, which is now faster during the life of one generation than previously took place during centuries, as well as disturbances in biorhythms, are the most dangerous symptoms of changes in ecological relationships. The ...
Commercial potential of biotechnology is immense since the scope of its activities covers the entire spectrum of human life and since it draws on the capabilities and ersourcefulness of the entire biological world and even beyond (for examples, modification of existing genes like, crystal protein gene of Bacillus thuringiensis to enhance the level of its expression and to combat the problem of gene silencing in transgenic plants). Biotechnology is ...
The Book "Cytogenetics" is designed primarily for undergraduate and postgraduate students of Indian Universities. The inclusion of greater detail than is usually found in texts of under graduate level is deliberate. This has resulted in corresponding advancement of University curricula, and in biology the emphasis has shifted to cell biology, genetics and physiology. It is hoped that this approach will meet the needs of undergraduate students, and also ...