alleryWhat was set into an igloo wall to let daylight in?
AA glass window
BA thin cloth sheet
CA clear ice block
DA carved wood slab
Answer & Solution
Correct answer: C. A clear ice block
1. Snow blocks are opaque, so light needs a clear gap.
2. A single block of clear freshwater ice was inserted.
3. Glass, cloth and wood were not used for this.
_Source: Wikipedia, Igloo, Building methods_
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