The answer to this is all of these because there are a lot of theories about plate tectonics and I believe those answers above is one of them so it should be C.
Hope this helped :)
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An isthmus is a narrow strip of land connecting two landmasses
I might be wrong, but I am pretty sure that the Mississippi River empties into the Gulf of Mexico. Hope I helped!!!
This isn't really a fair question. Everyone has some similar characteristics to others. Area doesn't matter except there traditions may be different.
ANSWER: line b
I hope this answer is right