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If you put the egg in vinegar for two days, the egg shells dissolve and become resilient
Influenced vinegar calcium, of which the shell is dissolved and disappears in the form of gas bubbles. It turns funny egg that looks like jelly. If you put the experiment on boiled egg, it will become elastic, like a rubber ball.
via factroom.ru
There is a "syndrome tiring sleep" - when a person wakes up in the morning tired
Ants can be used as stitches for cuts