1.   The two continents were once connected.

2.   This, of course, relates directly to the plate histories of the two continents.

3.   It is a misconception to assume that the two continents are similar.

4.   The previously existing subduction zone is converted into a suture zone marking where the two continents are welded together.

5.   Biologists divide the world into six major realms termed biogeographic regions, areas that do not coincide with the seven continents.

6.   But within a few years it became obvious that very different dramas were being played out on the two continents.

7.   Eurasian geography probably favored the rapid spread of agriculture out of the Middle East and throughout much of the two continents.

8.   Even the AFL-CIO said it would support such a deal because wages in the two continents were so similar.

9.   For international marathoners, the ultimate goal is to run seven marathons on the seven continents.