The Earth is approximately how old?
A) 14 billion years
B) 4.6 billion years
C) 40 million years
D) 6,000 years
Correct Answer:
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Q5: Toward the end of the Archean Eon,
A)
Q6: Which of the following provides evidence of
Q7: Banded-iron formations,such as the one in the
Q8: Chalk rock contains many tiny plankton shells.This
Q9: Stromatolites are layered structures produced by the
Q11: A shield is
A) a low-lying region where
Q12: Oxygen in the Earth's atmosphere is derived
Q13: Archean greenstones are formed from
A) basalts produced
Q14: Which of the following would be considered
Q15: _ can be used to determine the
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