If you found many tracks of the same species of prehistoric animals in an area, what might you conclude about that animal?

a
It lived in groups
b
It hunted alone
c
It was the only species there
d
It did not produce many offspring
Question 3 (1 point)
How do ice layers show the history of the Earth's climate?

a
The thickness of each layer of ice can show temperature changes on Earth.
b
Concentrations of gases and elements in the ice can show temperature changes on Earth.
c
The presence of certain gases in the ice can show that climate changed at certain times on Earth.
d
The presence of soot and other particles in the ice can show that climate changed at certain times on Earth.
Question 4 (1 point)
The trilobite is a fossil that lived a long time ago and there was an abundance of them. They lived only for a short period of time before they all went extinct. This is an example of .

a
A trace fossil
b
An index fossil
c
A petrified fossil
d
A carbon fossil
Question 5 (1 point)
To learn how Earth's atmosphere has changed over time, scientists study the air bubble in which of the following?

a
Rocks containing uranium
b
Pollen
c
Ice cores
d
Fossils in sedimentary rock
Question 6 (1 point)
In which situation will older rock layers lie above younger rock layers?

a
Erosion has exposed rocks, and new layers have deposited
b
Rock layers have been overturned by folding
c
Sedimentary rock layers have remained undisturbed after deposition
d
Igneous intrusions have cut through layers of sedimentary rock
Question 7 (1 point)
Look at the illustration on the board. Assuming that this rock formation is undisturbed, what is the relative age of layer C?

a
It is the youngest rock layer
b
It is the oldest rock layer
c
It is older than B and younger than D
d
It is younger than B and older than D