8th Grade Science EOG Review (NC 8.E.2 & 8.L.4)

Front

What is evidence of evolution on Earth?

Back

Evidence from rock layers, fossils, and ice cores.

Front

What increases genetic variation in a population?

Back

An increase in mutations.

Front

Why did mammals become dominant after the dinosaurs?

Back

They had traits that helped them adapt to environmental changes.

Front

How can genetic variation result from environmental changes?

Back

An arctic fox changes its color over time because it migrates to an area with a different climate.

Front

What happens to a species that cannot adapt to a changing environment?

Back

The species would become extinct over time.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define adaptation in biology.

Back

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

Front

What is genetic variation?

Back

Differences in DNA among individuals in a population.

Front

What role do fossils play in understanding evolution?

Back

Fossils provide evidence of past life forms and how they have changed over time.

Front

What is a mass extinction?

Back

A widespread and rapid decrease in the biodiversity on Earth.