| 21. | Their case, he said, was built on " shifting sand castles of speculation ."
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| 22. | Shifting sands have substantially changed the beach since the 1940s.
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| 23. | The Kalahari is not an archetypal desert of shifting sands.
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| 24. | "The law of sexual harassment is an area of shifting sands, " she added.
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| 25. | The Churu City is encircled by large shifting sand dunes.
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| 26. | Most of the bridge is built on a gravel bed covered by shifting sand.
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| 27. | It is periodically uncovered and recovered by shifting sands.
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| 28. | It also occurs in plants that colonise areas of shifting sands such as sand dunes.
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| 29. | Ocean beaches are habitats with organisms adapted to salt spray, tidal overwash, and shifting sands.
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| 30. | The lagoon is 13 km?in size, shallow and subject to large shifting sand banks.
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