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Introduction
All living creatures need food. The food is consumed so that energy is obtained. The energy is utilised by the body for various purposes like locomotion, conduction of impulses, repair of damaged tissues, building of cell materials, etc. The substance that is used to release energy is called the su..
Introduction
We heat raw food to soften it. We freeze water into ice by cooling it in refrigerator. When we boil water in a kettle we observe the steam oozing from the mouth of the kettle. When the cork is difficult to remove, we slightly heat the mouth of the bottle, so that the cork comes out easily. Through ..
Introduction
As the complexity of the individuals, plants or animals increases the different cells and organs become separated from each other by greater distance. Thus it becomes necessary to have a system by which the different parts of the organisms can function as a single unit. This is possible only if the..
Introduction
The branch of chemistry, which deals with energy changes during various physical processes and chemical reactions, is called chemical energetics. All chemical reactions are normally accompanied by energy changes. These energy changes take place because energy is needed to break chemical bonds, and ..
Introduction
All living creatures need food. The food is consumed so that energy is obtained. The energy is utilised by the body for various purposes like locomotion, conduction of impulses, repair of damaged tissues, building of cell materials, etc. The substance that is used to release energy is called the s..
Introduction
In unicellular organisms a single cell carries out all the life processes as the cell itself is the organism. In advanced forms like the few-celled algae, protozoa, sponges, etc., the size of the organism ensures that all the cells are not very far from each other. The uptake of materials from the ..
Introduction
The pressure exerted by a liquid on the base of the container depends on the vertical height of the liquid over it not on the area of cross-section. As one goes deeper in the swimming pool, the pressure on the ear drum is found to increase. A column of mercury exerts more pressure than a column of ..
Introduction
Born in San Francisco, Frost spent most of his adult life in rural New England and his laconic language and emphasis on individualism in his poetry reflect this region. He attended Dartmouth and Harvard but never earned a degree, and as a young man with a growing family he attempted to write po..
Born in San Francisco, Frost spent most of his adult life in rural New England and his laconic language and emphasis on individualism in his poetry reflect this region. He attended Dartmouth and Harvard but never earned a degree, and as a young man with a growing family he attempted to write po..Introduction
) who experimented with electricity and made major inroads in understanding the phenomenon. Alessandro Volta By the middle of the eighteenth century, there were machines that could generate large electrical charges. Static electricity may produce dramatic effects but it is of very little ..
) who experimented with electricity and made major inroads in understanding the phenomenon. Alessandro Volta By the middle of the eighteenth century, there were machines that could generate large electrical charges. Static electricity may produce dramatic effects but it is of very little ..Introduction ) who experimented with electricity and made major inroads in understanding the phenomenon. By the middle of the eighteenth century, there were machines that could generate large electrical charges. Static electricity may produce dramatic effects but it is of very little practical use to ..
) who experimented with electricity and made major inroads in understanding the phenomenon. By the middle of the eighteenth century, there were machines that could generate large electrical charges. Static electricity may produce dramatic effects but it is of very little practical use to ..See what our Users say :
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