global changes

Summary - The basis of life on earth is atmospheric cover on earth and natural cycles like carbon, oxygen, nitrogen and hydrological cycles. Atmosphere is evolved in its present form due to sunlight and rotation of earth on its axis. Many environmental changes like change in rai..

The atmosphere resource of our world is unique and available to our planet only. No other planet is found to have similar atmosphere. Earth's atmosphere is a legacy from history of this planet. It was formed billions of years back. In the formative years, as the earth started cooling, it did ..

Harmful results of Greenhouse Effect is global warming. While the green house gases enable life to exist, problems arise when the atmospheric concentrations of these gases increase. All climate changes up to the industrial revolution occurred naturally as very few gases were re..

Realising the changes in global climate and human interferences resulting in such changes, many global conferences are held in order to reach consensus among countries to plan and implement the measures to mitigate the harmful effects of climate changeh..

Global warming has already occurred and will continue to do so. Evaporation will increase as climate warms and there will be an increase in average global precipitation. Local climate conditions are likely to change depending on the modifications of local rainfall pat..

Based on temperature and rainfall, each part of world has definite seasons in a year with many characteristic features about air temperature, hydrological changes, biological growth etc. In most parts of world, summer and winter seasons are clearly distinguished. The onset and closure of..

Along with warmer temperatures and higher humidity, the number of very hot days is expected to rise in many areas around the globe. Heat stress occurs in such conditions and the young, old and poor people are more susceptible to it. High temperatures will reduce work efficiency of human beings. Fu..

Green House Gases - The concept of green house - though identified by man late - is certainly as old as global environment itself. That is, a part of radiation received by earth's surface is reflected back to environment and trapped due to certain gases. These gases are called green house..

Air pollution can cause number of health hazards to human beings, animals, birds, in addition to causing number of deleterious effects on earth's atmosphere as well as vegetation and even on some buildings. It is a global malady causing innumerable irreversible changes to our pl..

Natural resources that are limited in nature and are liable to be degraded in quantity and quality by human activities are exhaustible natural resources. Examples are forests, soil, wild animals, minerals, fossil fuels etc. The understanding of the environment and its proper conservation, has gain..