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- The iridescence of pearls depends on the number and thickness of the nacre layers.
Question 1:
The iridescence of pearls depends on the number and thickness of the nacre layers. Which of these combinations provides the most iridescent pearl?
A. A large number of layers that are as thin as possible
B. Many layers that are as thick as possible
C. A small number of layers that are very thick
D. Fewer layers that are very thin
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