development of nations

The importance of maintaining the ecological balance and conservation of the resources has been increasingly becoming clear in the last two decades. It has now become necessary for all countries in the world to recognise this fact and plan what is known as 'sustainable development'. The ..

Nutritional Disorders - Nutritional disorders occur due to malnutrition. Malnutrition refers to bad nutrition and can therefore be applied to both undernourishment and overeating. Undernourishment is a serious problem in developing countries with a large population being deprived of a bal..

The following are some improved breeds of dairy cows that have been developed in our country at the National Dairy Research Institute (NDRI), Karnal, Haryana. Karan Swiss : This is a crossbreed between Brown Swiss and Sahiwal. Karan Fries: This is a cross breed between Hol..

Policy decisions are already taken in India to undertake technology developments for alternatives to CFCs. Two CSIR laboratories - National chemical laboratory and Indian Institute of Chemical technology are working on this. Along with this, parameters for design modifications s..

. Similarly, developmental plans can be drawn on long term basis to attain success, if the population can be predicted for future period. Thus, study of population is useful to know many past, present and future issues of human society, national economy, environment and development..

Plants on which we depend for food are under attack from insects, fungi, bacteria, viruses, rodents and other animals, and must compete with weeds for nutrients. To kill unwanted populations living in or on their crops, farmers use pesticides. The first widespread insecticide use began at the end ..

>The database forms the basis of future plans also. The trend established by comparison with earlier years can lead to meaningful projections about total population, expected growth rate, variations in age, composition of population, literacy rate, death rates etc., These are helpful in planning of..

A report by scientists at the United Nations Environment Program (UNEP) said the Asian Brown haze is a three kilometer deep blanket of pollution in the sky, which stretches across South Asia, and has been caused by the spectacular economic development experienced by this part o..

. Tidal mills were used for hundreds of years in some of the European countries. Schematic view of Turbines Fixed at the Bottom of a Reservoir The first small wave-energy device was built in Japan by Yoshio Masuda. Hundreds of navigation buoys use his system in the Sea of Japan. The Japanese are al..

These are shared by all nations. Examples: Air and solar energy. Study of natural resources can be treated to have run parallel to course of human development as well as parallel to the course of evolution of science itself. The study of natural resources has been an inseparabl..