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v. t. e. Energy conservation is the effort to reduce wasteful energy consumption by using fewer energy services. This can be done by using energy more effectively (using less energy for continuous service) or changing one's behavior to use less service (for example, by driving less). Energy conservation can be achieved through efficient energy ...
e. The law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. [1] In the case of a closed system the principle says that the total amount of energy within the system can only be changed through energy entering or leaving the system.
e. Energy is sustainable if it "meets the needs of the present without compromising the ability of future generations to meet their own needs." [ 1][ 2] Definitions of sustainable energy usually look at its effects on the environment, the economy and society. These impacts range from greenhouse gas emissions and air pollution to energy poverty ...
Starvation response. Starvation response in animals (including humans) is a set of adaptive biochemical and physiological changes, triggered by lack of food or extreme weight loss, in which the body seeks to conserve energy by reducing metabolic rate and/or non-resting energy expenditure to prolong survival and preserve body fat and lean mass.
Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies and methods available that are more energy efficient than conventional systems. For example, insulating a building allows it to use less heating and cooling energy while still ...
Standby power used by consumer electronics and appliances while they are turned off accounts for an estimated 5 to 10% of household electricity consumption, adding an estimated $3 billion to annual energy costs in the US. "In the average home, 75% of the electricity used to power home electronics is consumed while the products are turned off."
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