Question

fill in the blank question scientists use several principles to interpret rock sequences and determine relative ages, including horizontality, , cross - cutting , and inclusions.

Explanation:

The principles used to interpret rock - sequences and determine relative ages are the principle of superposition, principle of cross - cutting relationships, and principle of inclusions. The principle of superposition states that in an undisturbed sequence of sedimentary rocks, the oldest layers are at the bottom. The principle of cross - cutting relationships says that a geologic feature that cuts across another is younger than the feature it cuts. The principle of inclusions states that if a rock contains inclusions of another rock, the inclusions are older than the rock containing them.

Answer:

superposition; relationships