| 41. | Fog drops then freeze onto dry ice and fall to earth as artificial snow.
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| 42. | Project Cirrus even involved throwing dry ice on a cyclone.
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| 43. | Subzero refrigerators were replaced by dry ice layered in newspapers.
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| 44. | Sadly, I don't have much practical experience with dry ice.
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| 45. | Dry ice will extend the period food will stay frozen.
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| 46. | Mars may once have been scoured by dry ice glaciers.
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| 47. | To freeze it requires either liquid nitrogen or dry ice.
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| 48. | We send them out in overnight mail, packed in five pounds of dry ice.
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| 49. | Area hospitals have stocked up on generators and dry ice.
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| 50. | Do you want to use dry ice or do you want to use fire?
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