Millions of library books are deteriorating because
A)There is too much humidity in the library buildings
B)The ink used in printing the books is eating through the paper
C)The glue holding the books together is drying out
D)The books were printed on acid-based paper, which is turning brittle

Question

Quizplus · Accepted Answer

Acid-based paper, also known as acidic paper, is a type of paper that was widely used before the 1990s in the publishing industry. This type of paper contains lignin, which makes it prone to deterioration over time. As the lignin breaks down, the paper becomes brittle and discolored. This is why millions of library books printed on acid-based paper are deteriorating, and it is essential to transfer them onto alkaline paper or microfilm to preserve their content.

Millions of Library Books Are Deteriorating Because