Difference Between Organisms
Evidence of Changes Over Time
Evidence of Ancestry
Examining Organisms
Vocabulary
100
a characteristic that helps an organism survive
What is adaptation
100
in sedimentary rock within Earth’s crust
What is evidence that organisms have changed over time?
100
common ancestors
What do scientists think that all living species descended from?
100
Examining an organism carefully can give clues about its
What is ancestors
100
A characteristic that helps an organism survive and reproduce in its environment.
What is adapation
200
a group of organisms that can mate with one another to produce fertile offspring
What is species
200
the traces or remains of organisms that lived long ago
What are fossils?
200
traits
What do all living things get from ancestors?
200
Whales are ______________________, not fish.
What are mammals?
200
a group of organisms that are closely related and can produce fertile offspring
What is a species
300
members of the same species that live in the same place
What is population
300
sediment
What helps make fossils?
300
with a diagram with branches
How do scientists show their ideas about how species are related?
300
Whales had an ancient ancestor that lived on ______________________.
What is land?
300
the process of which inherited characteristics within a population change over generations such that new species sometimes arise.
What is the evolution
400
New species form
What do scientists think happens as populations change over time?
400
a timeline of life
What is the fossil record?
400
a group descended from an older species (hint: illustrations/drawings)
What does each branch represent on the drawing?
400
comparative anatomy
What is the study of physical similarities and differences between living things?
400
The bodily structure of an organism
What is anatomy
500
evolution
What is it called when populations slowly change over time?
500
They are close relatives of organisms alive now.
What do we know about fossils found in newer layers of Earth?
500
something that tells the order in which species lived
What is the fossil record?
500
Related organisms share many traits.
What do scientists find when they study the structures of different organisms?
500
the root sed-means "to sit" or "to settle" the suffix meant means "result of"
What is sedimentary
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