| 11. | They can quickly upset the balance of nature.
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| 12. | The balance of nature is not really balanced.
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| 13. | We talk about the balance of nature, if we lose these animals we'll be very unbalanced ."
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| 14. | :: : : : : One factor to keep in mind is the balance of nature theory.
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| 15. | "It seems to me academic, " he said, " to talk about maintaining the balance of nature.
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| 16. | The war, he is trying to say, damages not only soldiers, but the very balance of nature.
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| 17. | "' Petal "'is a wise elf who believes in keeping the balance of nature at all costs.
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| 18. | Environmentalists accuse the World Bank of backing large development projects that create havoc with the balance of nature.
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| 19. | "It's the balance of nature ."
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| 20. | The balance of nature is thus restored, and the previously stranded ships, including SMsuke's father's, head back to port.
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