Question

question 2.
how does the principle of superposition support the idea that earth has changed over time?
a. older layers of rock are found above newer layers.

b. newer layers of rock are found above older layers.

c. fossils are found only on the top layers.

d. all rock layers are the same age.

Explanation:

The principle of superposition states that in undisturbed rock sequences, younger (newer) rock layers form on top of older ones. By observing the order and differences in these layers (like distinct fossils or rock compositions), scientists can see that Earth's environments and life forms have changed as each layer was deposited over time. Option A is incorrect because it reverses the layer order. Option C is wrong because fossils exist in many layers, not just the top. Option D is false as layers form at different times, so they vary in age.

Answer:

B. Newer layers of rock are found above older layers.