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Answer:

Fortunately, the potential for higher energy efficiency is great. ... For example, landlords of rental residential buildings are not motivated to pay for ... it over time, and the timeframes in which specific technologies can be expected to ... especially for small firms, and many industries prefer to expend their human and financial.    

4 Energy Efficiency | America's Energy Future: Technology. this is a site

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the car industry is one of the most important industry in the world as it aid easy transportation of goods and man.

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cars and other automobiles have aid easy movement of people and goods from one place to another as it is more efficient (does not waste time as compared to traditional means of transportation.)and reliable.

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