1. Introduction to Biology

What is the primary mechanism that causes a change in fur color in a population over generations?

Which of the following statements best describes the relationship between environmental catastrophes and natural selection?

How do vestigial structures provide evidence for evolution?

What observations did Charles Darwin make about finches in the Galápagos Islands that contributed to his theory of natural selection?

Which of the following is the most likely cause of succession in ecosystems?

Which term describes the oldest and most stable stage of ecological succession?

What is a likely evolutionary consequence for prey species in an ecosystem where wolves were hunted to extinction about a century ago?

Which process has most contributed to the survival of ecosystems through Earth's environmental changes?

Which of the following events would most likely lead to secondary succession in an ecosystem?

Which of the following best describes predation in the context of natural selection and evolution?

Two living species can share similar traits not inherited from a common ancestor. What is the term for this phenomenon?

During his voyage on the HMS Beagle, what three types of variations among organisms did Charles Darwin observe that contributed to his theory of natural selection?

Predators that are keystone species can maintain species diversity in a community if they:

Which of the following situations will lead to natural selection?

Which of the following best describes how Francis would know that a hypothesis has become a scientific theory in the context of natural selection and evolution?