Juliette Final

How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the sizes of certain animals has changed drastically over millions of years
• Fossils show that some species have gone extinct
• Fossils show how life forms present today are different than those from the past
• Different sedimentary rock layers provide evidence for how the environment has changed over time

Which of the following is an example of a vestigial structure?

• the wings of a red-tailed hawk
• the hind limbs of a house cat
• the fins of sharks
• the tailbone of a human

Structures are similar in appearance but not in structure

• Vestigial 
• Homologous 
• Analogous Structures 
• Embryonic 

The changes of species over time

• Embryonic 
• Natural selection 
• Mimicry 
• Evolution 

Which layer is the youngest

• 1
• 2
• 3
• 4

Which layer is the oldest

• B
• A
• E
• C

Which is not evidence for evolution?

• many animals have homologous structures due to common ancestry
• Many animals have vestigial structures from an ancestor
• We can observe changes in life forms by observing the fossil record
• All of these are evidence for evolution

A change in the inherited characteristics of an organism over time is ________

• evolution.
• development.
• growth.
• ancestry.

The appendix, which is not needed to survive, is conisdered to be a

• Homologous Structure

• Analagous Structure

• Vestigial Structure

• Homology

If two organisms have similar traits of DNA they are probably

• share a common ancestor
• share a common environment
• share a common population
• speciation