Question

How can exposed rock like that found in the Grand Staircase help us understand the timeline of life on Earth?

A) The rock layers contain fossils that can be dated.
B) The rock layers reveal the Earth's magnetic history.
C) The rock layers show the history of volcanic activity.
D) The rock layers provide no information about Earth's history.

Answer 1

Exposed rock layers, like those in the Grand Staircase, can help us understand the timeline of life on Earth by containing fossils that can be dated.

The write answer is A) The rock layers contain fossils that can be dated.

Step-by-step explanation:

Exposed rock layers, such as those found in the Grand Staircase, can help us understand the timeline of life on Earth because these rock layers contain fossils that can be dated, which is option A.

By examining the fossils found in different rock layers, scientists can determine the relative ages of the fossils and the rock layers they are found in.

The deeper the fossil is found, the older it is. This allows scientists to reconstruct the history of life on Earth and understand how species have evolved over time.

The write answer is A) The rock layers contain fossils that can be dated.