The earth looked very different millions of years ago. Some people think that could never happen. Some evidence are foissls that are soposed to be in North America but are in antarticia. Alfred Wagner stated continental drift theory. Sciencetist have been studying and they found out that the continents have been moving.
Some evidence for continental drift is fossil evidence. Sciencetist have found fossils that are in antartica that are soposed to be in north america. Sciencetist found out that continental drift was the secret that was moving the fossils.
http://en.wikipedia.org/wiki/Continental_drift
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