WHAT IS ENERGY CONSEVATION
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Energy neither created nor destroyed but can transform from one from of energy to another....
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The physics definition says that energy is a currency that allows you to do work. Work is done when you apply a force over a distance, or transfer energy from one place to another. So, all that really says is that energy allows you to transfer it, and to do that, you apply a force.
The story of energy never ends, because energy can never be used up - it is said to be 'conserved.' Conservation of energy is the principle that energy is not created or destroyed; it only moves from one place to another - from one type of energy to another.
Energy conservation is the effort made to reduce the consumption of energy by using less of an energy service. This can be achieved either by using energy more efficiently or by reducing the amount of service used. Energy conservation is a part of the concept of Eco-sufficiency. Energy conservation reduces the need for energy services and can result in increased environmental quality, national security, personal financial security and higher savings. It is at the top of the sustainable energy hierarchy. It also lowers energy costs by preventing future resource depletion.
The food you burn in your body to give yourself energy gets transferred into other objects and into the rotation of the Earth itself when you move around, lift things, or ride a bicycle. It never disappears.