Description : How cold is it inside an igloo and what do they use for warmth?
Last Answer : answer: Snow is used because the air pockets trapped in it make it an insulator. On the outside, temperatures may be as low as −45 °C (−49.0 °F), but on the inside the temperature may range from ... builds up a layer of ice that contributes to the strength of the igloo.[5] -Excerpted from da Wiki