Students observe the diagram below. Which statement best explains what the order of undisturbed sedimentary rock layers in the Grand Canyon shows about Earth’s history?

What conclusion is best supported by the data in the table?

In undisturbed sedimentary rocks on several continents, geologists find a thin, iridium-rich clay layer.

Marine shell fossils are found high in a mountain range. What conclusions are supported by this evidence? Select ALL that apply.

Students compare evidence about Earth’s history. Classify each source as a Short-Term Record (years–centuries) or a Long-Term Record (thousands–millions of years).

Students compare evidence from rock strata and ice cores.