Answer:
Geologists searching for clues to the ancestors of modern-day vertebrate land animals should look in layer 2 , of the fossil beds.
Step-by-step explanation:
The fossil record is like a file that exposes the history of life on Earth. Studying plants and animals preserved in rocks can give clues to how life forms were in the distant past. We can find out about their anatomy, their behavior and even ecology, as they related to the habitat of the time. It is a vast and intriguing field of investigation.
Ancient fossils are deposited in ever deeper layers of land, so geologists wishing to find clues to the ancestors of modern-day vertebrate land animals should look in layer 2 of the fossils beds.