History of Earth

What era do we live in?

• Cenozoic
• Paleozoic
• Mesozoic 
• Pre Cambrian 

We can look at fossils as evidence for evolution of organisms.

• True

• False

When an organisms blends in with its surrounding.

• Disruptive Selection

• Directional Selection

• Stabilizing Selection

• Mimicry

• Camouflage

All living things contain which element?

• helium

• sodium

• copper

• carbon

ABOUT how old is the Earth?

• 4 million years

• 40 million years

• 400 million years

• 5 billion years

Put in order from oldest to newest

• E, D, C, B, A
• A, B, C, D, E
• E, C, D, B, A
• E, C, B, D, A

Steven is 9 years old.  Olivia is 12 years old. 
Olivia is older than Steven. 
What type of dating system is this?

• Relative
• Absolute

Which layer is the OLDEST?

• A
• B
• C
• D

Which scientists study fossils?

• geneticist
• paleontologist
• biologist
• fossilologist

Why are index fossils good clues for identifying when rocks were formed? 

• They are easy to form in rock. 
• They are difficult to form in rock. 
• They only existed during specific periods of time.