Why is one?s breath visible in cold but not in hot weather?
(A) The water vapours in the exhaled breath condense into
small droplets, which become visible
(B) During winter, visibility is clearer and water vapour in
the breath can be seen
(C) During hot weather, water drops in breath evaporate
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( A ) The water vapours in the exhaled breath condense into
small droplets, which become visible
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