Question

A geologist finds four layers of sedimentary rock. She determines that no geologic events have shifted the layers. She labels the layers A, B, C, and D from the top to the bottom.

Which statement about these layers is accurate?

A is older than B.
B is older than C.
C is younger than A.
B is younger than D.

Answer 1

Answer:

FORMULA = O2 ATOMIC number

Answer 2

_____________________

( B ) is younger than D.

_____________________

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