What did Darwin learn about the tortoises on the Galápagos Islands?

Which extinct animal did Darwin find that resembled the modern armadillo?

How long was the voyage of the HMS Beagle?

Darwin observed that rheas were ecologically similar to which other flightless birds?

What was the name of the ship Darwin joined for his five-year voyage?

What did James Hutton and Charles Lyell conclude about the age of Earth?

Jean-Baptiste Lamarck proposed that organisms could change during their lifetimes by doing what?

What was a significant contribution Lamarck made to the study of biology?

Which term did James Hutton use to describe the idea that Earth's history stretches back over an unimaginably long period?

After observing geological changes, what question did Darwin ask regarding the nature of life?

Why are dark brown eyes considered a survival advantage in regions near the equator?

How does tightly coiled hair provide a biological advantage in high-heat environments?

What is the evolutionary benefit of straight hair in high-latitude, cold climates?

What is the primary function of eyebrows in human survival?

Darwin referred to the competition for finite resources as the struggle for what?

What bird's niche does the Aye-Aye fill in Madagascar?

For at least how many years has the species of the Aye-Aye persisted on its branch of the tree of life?

What influences fitness in the process of natural selection?

What is the evolutionary process whereby a population becomes better suited to its habitat over many generations?

Adaptation can manifest as which type of trait?

Which animal group's evolution from ancient land mammals is documented by a fossil series?

What is defined as any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group?

Which of the following is NOT a method used to date fossils?

What are fossils that preserve something from an animal's behavior, such as footprints or tracks, called?

What is fossilized animal dung also known as?

What is the primary function of goosebumps for furry mammals?

What term is used for structures shared by related species that were inherited from a common ancestor?

Why did early mammals presumably need outer ear muscles?

What are structures called that are inherited from ancestors but have lost their original size and function?

How does missing the palmaris longus muscle affect a person?

Approximately what fraction of the 250 million annual antibiotic prescriptions in the United States are completely unnecessary?

What term describes all the genes, including all alleles for each gene, present in an interbreeding population?

How is allele frequency defined in population genetics?

How is evolution specifically defined in genetic terms?

What are the three main ways that heritable variation is produced in a population?

Which process describes how populations evolve to become distinct species?

What occurs when a species' gene pool splits and its populations stop interbreeding altogether?

Which isolating mechanism occurs when two populations evolve differences in courtship rituals or songs?

What type of isolation occurs when rivers, mountains, or bodies of water separate two populations?

Which isolating mechanism is at work when two or more species reproduce at different times?