a geologist finds four layers of sedimentary rock. she determines that no geologic events have shifted the…

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.

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

Brief Explanations:

In undisturbed sedimentary rock layers, the lower - lying layers are older. Layers are labeled A, B, C, D from top to bottom. So, the top - most layer A is the youngest and the bottom - most layer D is the oldest. Layer B is younger than layer D as B is above D.

Answer:

D. B is younger than D.