| 21. | Antarctic oases and dry valleys develop in areas with particular regional weather patterns and geography.
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| 22. | They presently appear as dry valleys, lakes, seabed depressions, and as areas filled with sediment.
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| 23. | This lay to the south in a dry valley.
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| 24. | Now 73, he completed his latest arduous research season in the dry valleys in January.
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| 25. | B�ttingen sits on a plateau in the southwestern Swabian Jura in a long dry valley.
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| 26. | The chalk displays all its characteristic features such as steep sided dry valleys, and sunken roads.
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| 27. | She also contributed to some of the pivotal discoveries on microbiology of the McMurdo Dry Valleys.
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| 28. | The site is in a dry valley on the north side of the village of Wetwang.
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| 29. | Ascending a dry valley, a rare Antarctic phenomenon.
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| 30. | They spent four months in Antarctica in the McMurdo Dry Valleys collecting data and rock specimens.
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