Question

horizontal layers can give clues about the _______ of the rocks under and above it.

a relative age

b theory of relativity

c relative density

d relative composition

Explanation:

In geology (a subfield of Natural Science), horizontal rock layers (strata) are used to determine the relative age of rocks. The principle of superposition states that in undisturbed layers, older rocks are below younger ones. The "Theory of Relativity" is a physics concept, "Relative Density" relates to mass/volume ratios, and "Relative Composition" isn't determined by layer position. So the correct answer is about relative age.

Answer:

a. Relative Age