What fundamental rule in geology states that in a sequence of undisturbed rock layers, the oldest layer is at the bottom and the youngest is at the top?

The Principle of Original Horizontality

A paleontologist discovers a fossil of a fish in a rock layer directly beneath a layer containing a dinosaur fossil. Assuming the layers are undisturbed, what can be concluded based on the Principle of Superposition?

The fish is younger than the dinosaur.

The fish and the dinosaur lived at the exact same time.

The fish is older than the dinosaur.

The rock layers must have been overturned by an earthquake.

The age of one rock layer in comparison to another.

The exact age of the rock in millions of years, determined by radioactive dating.

The age of the fossils found within the rock, but not the rock itself.

The chemical composition and mineral content of the rock layer.

In the layer at the very bottom of the excavation pit.

In the thickest layer, regardless of its position.

In the layer directly in the middle of the stack.

In the layer closest to the surface.

The absolute age of both layers.

The relative age of the layers.

The exact number of years between the formation of the layers.