| 41. | Because of the shallowing ocean bottom, water pushed ashore piles up, causing an abnormal rise in ocean level.
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| 42. | Researchers have found similar microbes living in other remote places _ polar caps, ocean bottoms and mountain tops.
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| 43. | The environmental group Greenpeace urged on Tuesday that the Kursk be pulled off the ocean bottom if possible.
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| 44. | Surveys of the ocean bottom found freshly collapsed sediment that slid nearly a mile down a 25-degree slope.
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| 45. | He developed the technique of using explosive charges to determine the type of ocean bottom sediments and their thickness.
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| 46. | But after fish die and fall to the ocean bottom, the molecular structure of the teeth begins to change.
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| 47. | Spassky said, adding, " I cannot conceive that such an object could be left on the ocean bottom ."
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| 48. | Her tasks included making accurate profile studies of the ocean bottom for the purpose of evaluating new sonar devices.
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| 49. | That massive event involved a huge section of ocean bottom being pushed under the land mass of South America.
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| 50. | Exploration of the ocean bottom in the last fifty years revealed manganese nodules and phosphate nodules in many locations.
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