The population explosions of earlier and present days have already caused and are still causing serious impacts on the global environment. As for the biological environment, the human population has stressed most biological systems, comprising flora and fauna, as well as biological diversity.
The flow of nutrients in ecosystem takes place in cyclic pathways through food chains, food webs and bio-geo-chemical cycles. Food…
The Pollution of atmosphere leads to severe consequences on local, regional, national and international levels.
There are many different types of technologies or technological models- such as Low-tech, Hi-tech, alternative, intermediate, appropriate, blended, hard, and soft technologies.
Anthills show the quality of soil.
A substance, factor, change, living being or a system that quantifies and simplifies phenomena and helps in understanding complex realities, is called as indicator.
It tells us something about changes in a system. There are many types of indicators some of which are- Financial Indicators, Poverty Indicators, Health Indicators, Environmental Indicators, and Indicators of Sustainable Development.
In early society, girls were restricted from play. They were restricted inside homes. This was something to do with our social conditions and traditions. But, girls are being given more rights today than they had earlier.
We may know that there are two types of disasters: Natural and Manmade or Human Induced Disasters. Disasters that occur…
It is reported that about 30 million tones of dry leaves are dumped into landfills every year in America. In India most of these leaves are either burnt on the floor where they fall or collected by poor people and stored for burning during winter season to generate heat.
The Heavy Engineering Corporation (HEC), Ranchi, Jharkhand has decided to make turbine for generating electricity from the Wind Energy. For this HEC has decided to take technology from the Sky Wind, a company of Germany.
The World Aids Day is celebrated the world over on the first December every year to make the public aware about the infection of HIV (Human Immuno Virus).The celebration of this day on the world scale was first started by the World Health Organisation in 1987.
