(Temporary Ohel) What is the halacha when some SCHACH fell down from the roof of the Sukkah;
Removing a Scab from One's Skin, Pulling Out a Non-bleeding Tooth, and Removing Warts, Pimples, etc. with a Utensil;
(Melting ice.) freezing dry foods; freezing ice pops; automatic ice makers; freezing liquids not to lose taste or not to get spoiled;