Describe the climate throughout the Paleozoic, Mesozoic, and Cenozoic eras.
Describe two pieces of evidence for scientists' ideas about the age of Earth.
Geologic time periods are divided into segments based on two pieces of information. Describe them.
The upper rocks in the Muav limestone are 505 million years old. The lower rocks in the Redwall limestone are 340 million years old. What could explain the gap?
Describe two pieces of evidence for scientists' ideas about the age of Earth.
Geologic time periods are divided into segments based on two pieces of information. Describe them.
The upper rocks in the Muav limestone are 505 million years old. The lower rocks in the Redwall limestone are 340 million years old. What could explain the gap?