Question

The following was used to support the early continental drift hypothesis.
A. the fit of the continents
B. the convection of the upper mantle
C. climate patterns ont he continents
D. all of the above

Answer 1

He was Alfred Wegener, and he put forward his hypothesis in about 1912. His only evidence for it at first was the way South America and Africa fit together like two pieces of a jigsaw puzzle. Further investigation showed some remarkable similarities in geological details on a smaller scale, just as would be expected if the two continents had once been joined. But all that the scientists could say was that it MIGHT just be chance, and since nobody could imagine any force that would move a whole continent a few thousand miles, that's the way things were left for a long time.

By 1960, calculations had made it pretty clear that the earth's metal core was generating more heat than could be conducted through the mantle, so the thermal balance had to be kept by the whole mantle (between the core and the crust) slowly convecting like a great big pan of barely-melted thick syrup. At the surface, this huge turning motion provided the sideways force that nobody had been able to think of. Other evidence from fossilised magnetism in old lava flows confirmed that hardly anywhere on earth was still where it used to be!

It's still going on. Very early results from satellite positioning systems showed that North America and Europe are moving away from each other at an inch or two every year.

Source: http://answers.yahoo.com/question/index?qid=20060918184951AAOmQZR

Answer 2

C. climate patterns ont he continents

Answer 3

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