Global Warming and Its Causes   Global warming is the term used to describe a gradual increase in the average temperature of the Earth’s atmosphere. It is a change that is believed to be permanently changing the climate of the Earth. One of the biggest problems faced by the world today is global warming. Many scientists believe that production of carbon dioxide and other greenhouse gases have a heating effect on...

Different Forces of Nature   Compared to other living organisms on the Earth, man has superior intelligence. This helps him to catch and tame other things for his personal use and benefit. During the course of time, he has succeeded in using different forces of nature like wind, water, fire, steam and electricity for his advantage. With the help of windmills, man has changed power of wind into electricity. Windmill drives...

Acid Rain   The rain that contains harmful chemicals and gases emitting from industrialized areas is known as acid rain. The rainfall having a pH level less than 5,6 results in acid rain. On the pH scale of zero to fourteen, a reading below seven shows existence of acid in a solution and above seven shows existence of alkali in the solution. This type of rain can lead to extensive damage...

Pollution and Its Types Pollution is an important cause for the loss of life on the Earth. Unwanted and too much addition of toxic substances in air, water, noise and soil leads to pollution. Pollution has adversely affected and changed the natural and unique quality of environment. It has caused negative effects on living organisms. Residues and leftovers of various things produced by men and throwaway objects contributes in polluting the...

Biological Diversity Or Bio-diversity Biological diversity or bio-diversity is the variety of living things that we see existing around us on the Earth. In other words, existence of a large number of different kinds of animals and plants making a balanced environment is known as biological diversity or bio-diversity. There are thousands of living species varying in their size, shape, colour and body parts. One finds great diversity from microorganisms to...

Non-renewable Resources Resources available on the Earth can be divided into renewable and non-renewable resources. However, non-renewable resources are also known as artificial or deplete resources. They cannot be replaced after use. A non-renewable resource is a natural resource that is used up faster than it can be made by nature. It cannot be produced, grown or generated on a scale, which can withstand how quickly it is being consumed. Once...

Forest and Water as Renewable Resources    Resources available on the Earth can be divided’ into renewable and non-renewable resources. Renewable resources are also known as natural or non-depletere sources. On the other hand, non-renewable resources are also known as artificial or deplete resources. Renewable resources are replaced naturally. These resources can be used without the risk of finishing or exhausting. Wind, solar power, wave power, forests, vegetation, wild life, pastures...

Greenhouse Effect In 1827, J. Fourier first used the term `Greenhouse Effect’. It is also called global warming, atmospheric effect or Carbon dioxide problem. Greenhouse effect is a problem of the gradual rise in temperature of the Earth’s atmosphere. It is caused due to increase in harmful gases in the air surrounding the Earth, which traps the heat of the sun. Greenhouse effect is the slow warming of the air because...