#7 Evolution

Front

What do fossils provide evidence of?

Back

Many species of organisms that lived long ago are now extinct.

Front

How would you describe an analogous structure?

Back

An analogous structure is a body part that is similar in function but not in structure, indicating different evolutionary origins.

Front

What does the sequence of rock layers illustrate?

Back

The living and nonliving environment both change over time.

Front

How is natural selection best described?

Back

Differences in survival rates as a result of different inherited characteristics.

Front

Who is the closest relative to the brown bear?

Back

Sun bear.

Front

What is evolution?

Back

The process by which different kinds of living organisms develop and diversify from earlier forms.

Front

Define natural selection.

Back

A mechanism of evolution where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a homologous structure?

Back

A body part that is similar in structure to another species' body part but may have different functions, indicating a common ancestor.

Front

What is extinction?

Back

The end of an organism or a group of organisms, typically due to environmental changes or loss of habitat.

Front

What is adaptation in the context of evolution?

Back

A trait that helps an organism survive and reproduce in its environment.