ConcepTest: Earth Timeline - the fossil record
Question:
Carefully examine the relative positions of the lettered arrows on the timeline below and estimate the ages represented by each arrow. Identify which letter corresponds most closely to the first appearance in the rock record of abundant fossils.
a. A
b. B
c. D
d. E
e. F
a. A
b. B
c. D
d. E
e. F
Student Responses:
No data yet. The correct response is b.
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