In a series of rock layers, a geologist finds fossils of a pine trees and oak trees in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of tropical plants and trees.
Which explains his findings?
A.
The ancient climate remained hot.
B.
The continent shifted toward the tropics.
C.
The continent remained in the tropics.
D.
The continent shifted toward the mid-latitudes and polar regions.
D. The only answer that explains that the climate of the region got cooler. Pine and oak trees reside in cooler areas that have the four seasons, meaning that the area got lost its tropic environment.
