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Practice Reading: Fill in The Blanks (Drag & Drop) ID: #47751 Underground Houses
Instructions
* Drag the correct answer into all target fields
Underground  houses  have  many  advantages  over  conventional  housing.  Unlike  conventional  homes,  they  can  be  built  on    surfaces  and  can  maximize  space  in  small  areas  by  going  below  the  surface.  In  addition,  the  materials  excavated  in  construction  can  be  used  in  the  building  process.  Underground  houses  have  less  surface  area  so  fewer  building  materials  are  used,  and    costs  are  lower.  They  are  also  wind,  fire,  and  earthquake  resistant,  providing  a  secure  and  safe  environment  in  extreme  weather.  One  of  the  greatest  benefits  of  underground  living  is  energy  .  The  earth's  subsurface  temperature  remains  stable,  so  underground  dwellings  benefit  from  geothermal  mass  and  heat  exchange,  staying  cool  in  the  summer  and  warm  in  the  winter.  This  saves  around  80%  in  energy  costs.  By    solar  design  this  energy  bill  can  be    to  zero,  providing  hot  water  and  heat  to  the  home  all  year  round.

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