AP BIOLOGY

EVOLUTION

THE ORIGIN OF LIFE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement explains how fossils of the same species can be found on different continents?
A
Organisms swam at different times to the same locations.
B
Plate tectonics moved species on land masses that were once connected.
C
New species evolved by choosing adaptations for the changing environments.
D
Organisms evolved into a marine form and then reverted back to a terrestrial form.
Explanation: 

Detailed explanation-1: -Fossil Evidence One type of evidence that strongly supported the Theory of Continental Drift is the fossil record. Scientists have found fossils of similar types of plants and animals in rocks of similar age. These rocks were on the shores of different continents. This suggests that the continents were once joined.

Detailed explanation-2: -Fossils of similar organisms across widely disparate continents encouraged the revolutionary theory of continental drift. Continental drift describes one of the earliest ways geologists thought continents moved over time. Today, the theory of continental drift has been replaced by the science of plate tectonics.

Detailed explanation-3: -Finding identical or similar fossils in areas separated by vast distances were some of the first clues that scientists used to reconstruct past plate movement. This distribution of fossils led to theories that the southern continents were once joined in a supercontinent called Gondwana.

Detailed explanation-4: -There are many examples of fossils found on separate continents and nowhere else, suggesting the continents were once joined. If Continental Drift had not occurred, the alternative explanations would be: The species evolved independently on separate continents – contradicting Darwin’s theory of evolution.

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