Question

what evidence did wegener find when studying the appalachian mountains?

fossilized human remains were found in caves in this region
rock formations were similar to those found in the caledonian mountains in europe
fossilized aquatic mammals were found on dry land
the same tree species had seemingly evolved in different places across the mountain range

Explanation:

Wegener's theory of continental drift was supported by geological evidence. When studying the Appalachian Mountains, he found that rock formations in the Appalachians were similar to those in the Caledonian Mountains in Europe. This similarity suggested that the continents were once joined together. The other options are incorrect: fossilized human remains are not relevant to Wegener's study of the Appalachians in the context of continental drift; fossilized aquatic mammals being found on dry land is not the key evidence here; and the same tree species evolving in different places is more related to biogeography but not the specific geological evidence Wegener used about mountain - rock formations.

Answer:

Rock formations were similar to those found in the Caledonian Mountains in Europe.