Geologists have evidence that over the past 1.5 billion years,
A)Earth's continents have remained essentially in their current shape and positions.
B)Earth's landmasses have joined into a single continent and split back apart again on three occasions.
C)Earth's landmasses have moved about extensively but have remained separate.
D)Earth's landmasses have been entirely submerged in water on three occasions.

Question

Quizplus · Accepted Answer

This is the theory of plate tectonics, which suggests that Earth's landmasses have moved around over time. The theory suggests that there have been at least three occasions where all of the landmasses were together in a "supercontinent," which later broke apart into separate pieces. This is based on evidence such as matching geological formations and fossils found on different continents, as well as the fit of the continents' coastlines.

Geologists Have Evidence That Over the Past 1