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Difference between continental glaciers and valley glaciers? Continental glaciers are known as ice sheets and cover extensive  areas of Antarctica and Greenland. Valley glaciers come from these  ice fields or mountain glaciers and sliâ¦de down the mountainsides  like long ribbons.
The difference between a sea and a lake largely comes down to permanence. A sea is a more permanent feature, while a lake is relatively temporary. This time frame is relative, and should be examined on a scale of millions of years. On a geological scale that includes and measures other massive, slow events such as ice ages and plate shifts, a lake is a temporary feature.