Question

to clean their spectacles people often breathe out on glass to​

Answer 1

Answer:

$To clean their spectacles, people often breathe out on glasses to make them wet. ... The gases that we breathe outcontain water vapour which condenses at spectacles so glass becomes wet and with the help of small amount of water, it is easy to clean thespectacles$

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Answer 2

Answer:

because it clean the glass and they often use solution to clean the spectacles