what changes have taken place in your locality in the contraction of houses?
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Answer:
The enthalpy of fusion of a substance, also known as heat of fusion is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.
Answer:
We live in an urbanising world occurring on the background of rapid population growth. Both these phenomena contribute to an ever-expanding and changing built environment, which draws heavily on the existing energy and resources. Today's buildings use about 40% of the world's energy and are responsible for nearly the same amount of carbon emissions – more than that in the transportation or industrial sectors (WBCSD 2009). Buildings are also highly dependent on finite resources that will be depleted in the near future with most of their energy coming from fossil fuels, such as oil, coal and gas – over 80% of world's energy comes from fossil fuels and a fair share of this goes into our buildings.
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