The Cenozoic Era Began About How Many Million Years Ago

Q71: The Petrified National Forest is found in

Q72: Geologists have principally used which class of

Q73: The Pliocene is a(n)<br>A) epoch.<br>B) era.<br>C) eon.<br>D)

Q74: The Quarternary is a(n)<br>A) epoch.<br>B) era.<br>C) eon.<br>D)

Q75: We live in the epoch called the<br>A)

Q77: The Petrified National Forest is found in

Q78: The term age of ancient life is

Q79: We live in the _ eon.

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