Multiple Choice
Radiometric dating is possible because
A) isotopes decay at a known rate.
B) older layers are deeper than younger layers.
C) when rocks are formed, chemical signatures determine how long they will last.
D) when rocks are formed, their chemical configuration never changes.
Correct Answer:
Verified
Correct Answer:
Verified
Q15: Compared with the Eocene, the Oligocene was
Q16: Which of the following important geological events
Q17: Fossils are formed when<br>A) rocks are heated
Q18: Which of the following statements concerning climate
Q19: Which of the following is true of
Q21: The Eocene primates had most of the
Q22: Early primates likely evolved to exploit new
Q23: The first primates that were similar to
Q24: During the last 65 million years, which
Q25: The first mammals were<br>A) large and diurnal.<br>B)