We live in the period called the
a. Cenozoic.
b. Holocene.
c. Ordovician.
d. Quaternary.
[Ques. 2] The Paleozoic era ended with an event called the
a. Chicxulub Impact.
b. Cambrian Explosion.
c. Great Dying.
d. Pangaean Rift.
[Ques. 3] Trilobites lived during which era?
a. Paleozoic
b. Cenozoic
c. Mesozoic
d. Archeozoic
[Ques. 4] The first 87 of geologic time is often called
a. Hadean time.
b. Pangaean time.
c. Precambrian time.
d. Proterozoic time.
[Ques. 5] The Cenozoic era began about how many million years ago?
a. 65
b. 545
c. 3
d. 245
[Ques. 6] The Mesozoic era began about how many million years ago?
a. 3
b. 545
c. 245
d. 65
[Ques. 7] The Paleozoic era began about how many million years ago?
a. 65
b. 545
c. 245
d. 3
[Ques. 8] The term Cambrian explosion refers to
a. an asteroid impact.
b. the breakup of a supercontinent.
c. intense, widespread volcanic activity.
d. a proliferation of life forms.
[Ques. 9] Which of the following eons is the oldest?
a. Proterozoic
b. Phanerozoic
c. Hadean
d. Archean
[Ques. 10] In which of the following eons do we live?
a. Phanerozoic
b. Hadean
c. Proterozoic
d. Archean
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