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Questions and Answers
What is the main reason for the over exploitation of pearl oysters, leading to the destruction of natural pearl oyster beds?
What is the main reason for the over exploitation of pearl oysters, leading to the destruction of natural pearl oyster beds?
- Increased economic opportunities from pearl culture
- Desire to create artificial pearls
- Tremendous demand for natural pearls (correct)
- High demand for pearl oyster shells
How many oysters out of 2000-10000 are estimated to contain a natural pearl?
How many oysters out of 2000-10000 are estimated to contain a natural pearl?
- 1 (correct)
- 100
- 500
- 50
What is the main reason why natural pearls are scarce in nature?
What is the main reason why natural pearls are scarce in nature?
- Rare occurrence of natural pearl formation (correct)
- High mortality rate of pearl oysters
- Natural predators of pearl oysters
- Lack of nutrients in the oysters
What is the key difference between marine pearls and freshwater pearls?
What is the key difference between marine pearls and freshwater pearls?
What is a notable characteristic of pearls that makes them unique among gems?
What is a notable characteristic of pearls that makes them unique among gems?
Why did the demand for natural pearls lead to the short-lived nature of pearl oyster fisheries worldwide?
Why did the demand for natural pearls lead to the short-lived nature of pearl oyster fisheries worldwide?
What is the main advantage of pearl culture over extracting natural pearls from oysters?
What is the main advantage of pearl culture over extracting natural pearls from oysters?
Why did the over exploitation of pearl oysters lead to the destruction of natural pearl oyster beds?
Why did the over exploitation of pearl oysters lead to the destruction of natural pearl oyster beds?
What is the chance of finding a natural pearl in an oyster in nature?
What is the chance of finding a natural pearl in an oyster in nature?
Why did the demand for natural pearls lead to the destruction of most natural pearl oyster beds?
Why did the demand for natural pearls lead to the destruction of most natural pearl oyster beds?
What is the main reason for the short-lived nature of pearl oyster fisheries worldwide?
What is the main reason for the short-lived nature of pearl oyster fisheries worldwide?
How does the rarity of natural pearls contribute to the high demand for them?
How does the rarity of natural pearls contribute to the high demand for them?
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