| 41. | They found that the perennial ice cover had shrunk by 14 percent over the last two decades.
|
| 42. | As a result of the above average ice cover in February 2014 the ice road was opened.
|
| 43. | Because of this, active volcanoes that have a significant snow and ice cover can be particularly dangerous.
|
| 44. | The total ice cover is approximately 200 km?and has about 20 km?of ice in volume.
|
| 45. | In the spring the ice covers an area of and in the winter it is twice that.
|
| 46. | There are two ways to express the total polar ice cover : ice area and ice extent.
|
| 47. | This summer is enough to melt the winter ice cover, which prevents the formation of ice sheets.
|
| 48. | In the Arctic, polar bears and walruses are among the likely victims of a shrinking ice cover.
|
| 49. | In addition, scientists suspect that Kilimanjaro's ice cover could disappear by 2020 if current climate conditions persist.
|
| 50. | The boom is removed each spring when ice covers fewer than 250 square miles of the lake.
|
