Question

Take a lemon a paintbrush and a piece of paper.cut the lemon and squeeze out its juice in a cup.dip the brush in the lemon juice and write a message on the paper.let the paper dry and you find that the letters of your message become invisible.now press the paper with hot iron or warm it by holding it above the flame of a candle(take care taht it does not catch fire).indentify the changes that can be reversed in this process.

Answer 1

Answer:

what happed to it answer