define energy
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for class 6 student
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Explanation:
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.
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the strength and vitality required for sustained physical or mental activity.
"changes in the levels of vitamins can affect energy and well-being"
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