A major problem with Wegener's Continental Drift Hypothesis was that he could not find rocks or other geologic features that would have been continuous from one continent to the next if the continents had been together.

In the figure, polygon abcd is transformed to create polygon a′b′c′d′. this transformation is a by a factor of .

After considering options, a student using the problem-solving process should next

Match the mountains with the type of collision that formed them. a. andes b. aleutians c. north american cordillera d. appalachians 1. continental- continental 2. continental- oceanic 3. oceanic- oceanic 4. arc- continent