I bet you didn't know that there have been fossils of tropical plants found deep within the ice of Australia.  Well there have, and this has caused scientists to do a lot of thinking about the history of Earth and what it might have been like before humans were here.  Now we have a whole new idea about what Earth was like, and have come up with the theory that all of the continents were in one large mass called Pangaea.


Pangaea was a landmass that consisted of all of the continents and other land masses.  The theory of continental drift explains how Pangaea broke up and was separated into the continents as we now know them.  This explains why Antarctica has tropical fossils on in.  It was once part of Pangaea, and was closer to the equator so it would have had a warmer climate.  Then it moved to the South Pole and became much colder, which preserved those plants.



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