Fossils
Because if fossils of the same animal species were found in an area they were not originated from and could not have traveled to proves evidence of continental drift
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__Mechanical__ weathering is most common in a desert environment.
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Answer:
A principle of law stating that within a sequence of undisturbed sedimentary rocks, that the oldest layers are on the bottom and the youngest are on the top. rock layers have a unique set of fossil animal and plant remains which can be used to determine the relative ages of rock layers.
Explanation: