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What was the great physical event that took place at the end of the Mesozoic era in North America? Rocky Mountains formed. First oceans formed O Mount Saint Helens erupted. Grand Canyon formed.
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What was the great physical event that took place at the end of the Mesozoic era in

North America?
Rocky Mountains formed.
First oceans formed
O Mount Saint Helens erupted.
Grand Canyon formed.

User Hnin
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6.1k points

1 Answer

3 votes

Answer:

Mount Saint Helens erupted

User Xianglin
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