Darwin and the Voyage of the HMS Beagle

Front

The gradual change in a species over time is called __________.

Back

evolution

Front

What was Charles Darwin's job aboard the HMS Beagle?

Back

naturalist

Front

What did Darwin realize about the giant tortoises of the Galapagos?

Back

Tortoises had different shell shapes depending on the island they were on.

Front

Which unexpected resident of the equatorial Galápagos Islands is pictured?

Back

Galápagos penguin

Front

The marine iguana's long, flattened, fin-like tail makes it a strong swimmer able to reach underwater algae. This tail structure is an example of a(n) _____________ .

Back

adaptation

Front

What is natural selection?

Back

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

Front

What is a species?

Back

A group of living organisms that can interbreed and produce fertile offspring.

Front

What is the significance of the Galapagos Islands in Darwin's studies?

Back

They provided unique examples of species that had adapted to different environments.

Front

What is an adaptation?

Back

A characteristic that improves an organism's ability to survive and reproduce in its environment.

Front

What is variation in a species?

Back

Differences in physical traits among individuals of the same species.