The break up of the Pangaea made it possible for fossils of the same organisms to be discovered in rocks of the same age in South America, India, Antarctica, Africa, and Australia. These continents are divided by ocean barriers and the same situation can be said for marsupials found in America and Austrialia. Before the Pangaea's breakup, marsupials were able to freely roam around and the Pangaea's breakup caused marsupials to change locations and climates, which caused them the need to adapt to new areas, which is why we can see the differences.
The breakup of pangaea help to explain the differences between American Marsupials and Australian ones because:
According to the given question, we are asked to show how the breakup of pangea helps to explain the difference between Australian marsupials and American marsupials.
As a result of this, we can see that prior to the breakup of the pangaea, the marsupials moved about together, but as a result of the breakup, the marsupials were forced to migrate that is why their fossils can be found on different continents.
A pangaea is quite simply a supercontinent which as the core for all the other continents and contained a large number of the Earth's land mass.
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