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5 N The nature's gift to us are referred to a natural resources. These are very valuabl We use natural resources for all things th we need. A careful and economical useof natural resources is called conservation. essential for maintaining ecological balan Let us study the various methods conserving the natural resources. Conservation of Air Conse​

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  • Liquefied petroleum gas (LPG), also called LP gas, any of SEVERAL liquid mixtures of the VOLATILE hydrocarbons PROPENE, propane, butene, and butane. It was used as early as 1860 for a portable fuel source, and its production and consumption for both domestic and industrial use have expanded ever since


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