Using the diagram below, what is the possible age of F if A is 100 million years old and D is 70 million years old?
A. 110 million yrs
B. 55 million yrs
C. 85 million yrs
D. 170 million yrs
Answer: C
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What will be an ideal response?
Which numbered layer in this photograph represents the youngest layer?
A. 1 B. 2 C. 3 D. 4
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