The Eskimo make his house i.e. igloo from ice. What is the reason for – McqOptions

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1.	The Eskimo make his house i.e. igloo from ice. What is the reason for this? (CTET Sept 2015)
A.	Ice does not allow cold air and water to come inside
B.	The air between the ice walls prevents the inside heat from escaping
C.	Ice is available free of cost, other material will cost a lot
D.	Only ice is available in polar region
Answer» C. Ice is available free of cost, other material will cost a lot

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