A pearl can be produced naturally by almost any shelled mollusk. What triggers the process of pearl formation?
- Irritant particles
- Changes in the chemical composition of the water.
- Pheromones
- All of these
Answer
The correct answer is A) Irritant particles.
More Science & Technology questions
- The iridescence of pearls depends on the number and thickness of the nacre layers. Which of these combinations provides the most iridescent pearl?
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