Pangaea questions, questions in screenshot.

While looking at a map of the current Earth, it's continents and land forms can often align, much like a puzzle. This indicates that at one point, Pangea may have been possible. Additionally, the motion of the Earth's tectonic plates supports the thoory of Pangea, as if you were to watch the motion of the Earth's tectonic plates in reverse, you would see that the motion of the pplates would draw land masses closer together.

Explanation:

Expkanation can be found above.

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answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and

c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.