How old is Earth?
A) 1-2 million years old
B) 3-4 million years old
C) 1-2 billion years old
D) 4-5 billion years old
E) 1-2 trillion years old
Correct Answer:
Verified
Q24: Which element has the shortest half-life?
A) rubidium-87
B)
Q25: On the tree below,which number represents the
Q26: A radioactive isotope is
A) a pair of
Q27: Which ratio is NOT analyzed for radiometric
Q28: An isotope is the same element with
Q30: Uranium-238 has a half-life of 4.5 billion
Q31: All of the following are TRUE of
Q32: Which of the following radioactive isotopes is
Q33: Uranium-238 after many decay events becomes this
Q34: To determine the age of organic remains,the
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