The earth was formed about
A) 1 million years ago.
B) 3.2 million years ago.
C) 4.5 billion years ago.
D) 15 billion years ago.
Correct Answer:
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Q5: Multicellular organisms first appear
A)3.6 billion years ago.
B)2
Q6: Some of the earliest fossils indicate that
Q7: At the moment,the best guess for the
Q8: The process that explains the movements of
Q9: An important result of the evolution of
Q11: At the time the earth was formed,the
Q12: The heavy elements that now make up
Q13: Most of the history of life on
Q14: The extinction that wiped out the dinosaurs
Q15: How old is the first evidence of
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