A limestone rock is found in an Arizona desert. The limestone is gray and has a fish fossil. What can scientists learn from the limestone?

Question

Responses
A There was once a lake in the area.There was once a lake in the area.
B Some fish lived on land many years ago.
Some fish lived on land many years ago.
C Many years ago there were dinosaurs in the area.Many years ago there were dinosaurs in the area.
D There were many trees and plants in the area at one time.

Answer 1

A. There was once a lake in the area.

The presence of limestone and a fish fossil suggests that the area likely had a body of water at some point in the past, such as a lake or ocean, where the fish lived.