Question

Consider the impact of tectonic activities before and after 85 Ma on interactions or migrations of dinosaur populations between each of the point pairs shown below. In each case, you will need to decide if land-dwelling dinosaurs could have traveled between each set of points. Then, choose the answer that best explains your reasoning. Refer to your work above and Lesson 9, especially Figure C-33, and don’t forget that this map shows present-day geography, not geography 85Ma ago.

options are: unlikely due to the sea in between the two 85 Ma, unlikley due to a mountains between the two at 85 Ma, likely; locations are parellel to mountains even if theyre not on the same coastline, likely; due to being on the same coastline at 85 Ma

PRESENT D 400km 1012 13

a. 12 and 9   

b. 12 and 10 / 11                                 

c. 3 and 10 / 11

d. 3 and 5   

e. 8 and 12

Answer 1

a. It is possible that they migrated from 12 to 9 to bypass the volcanic heat and other effects.

b. Maybe they reach there to get some relief from the hot land and that's they choose to go seaside.

c.By moving towards the seaside maybe they were in search of a cold and moderate climate.

d. It is also possible that on moving to seaside they went to inland areas to save themselves from the plate tectonic movements.

e. They just change their location and they did not cross the plate tectonics.