The four sentences (labelled 1, 2, 3, and 4) given below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the four numbers as your answer.
1
As books age, the cellulose and lignin in the paper begin to break down, releasing a mix of volatile organic compounds into the air.
2
Old books carry a scent that many people instantly recognize-and even love.
3
These compounds are benzaldehyde, which gives off an almond-like scent, vanillin, which smells like vanilla, ethyl hexanol (floral scent), toluene (sweet), and furfural (which has a slightly bready scent).
4
This familiar aroma isn't just dust or mildew; it's actually a result of slow chemical changes happening inside the paper and ink.
TITA Answer:
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