The Precambrian basement rocks of Ohio became part of the North American continent
A) more than 2.5 billion years ago.
B) 1.9 billion years ago.
C) 1.8 to 1.9 billion years ago.
D) 1.7 to 1.8 billion years ago.
E) about 1.1 billion years ago.
Answer: E
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Indicate whether the statement is true or false
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What will be an ideal response?