The Oligocene Is A(n)

Q80: The Permian is a(n)<br>A) epoch.<br>B) era.<br>C) eon.<br>D)

Q81: The term Cambrian explosion refers to<br>A) an

Q82: Rubidium-_ dating is an important radiometric dating

Q83: The Phanerozoic eon and the Paleozoic era

Q84: When rocks and geologic events are placed

Q86: Amber is fossilized<br>A) bone.<br>B) tree resin.<br>C) shell.<br>D)

Q87: Relative and absolute geologic times are combined

Q88: The Pleistocene epoch is also referred to

Q89: Geologists have principally used which class of

Q90: Which of the following is the era