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Author Question: The term Cambrian explosion refers to a. an asteroid impact. b. the breakup of a supercontinent. ... (Read 73 times)

CharlieWard

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on: Jul 28, 2018
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.

Question 2

Which of the following eons is the oldest?
 a. Proterozoic
  b. Phanerozoic
  c. Hadean
  d. Archean


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tranoy

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

c


CharlieWard

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Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

peter

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Reply 3 on: Yesterday
Excellent

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