Question

The map shows the current location of the Appalachian Mountains in North America and the Caledonian Mountains in Europe.

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Which TWO pieces of evidence would support the claim that the mountain ranges were once connected?




Both mountain ranges have similar climates.


Both mountain ranges have similar rock compositions.


Both mountain ranges have similar signs of weathering.


Both mountain ranges have rocks that are the same age.


Both mountain ranges have the same living plants and animals.

Answer 1

- Both mountain ranges have similar rock compositions.
- Both mountain ranges have rocks that are the same age.

Matching rock types and the same ages indicate they were formed by the same orogeny when the landmasses were joined. Climate, weathering, or current living organisms can be similar for other reasons and do not prove a past physical connection.