1. Introduction to Biology

Which of the following best describes secondary succession in an ecosystem?

Darwin and Wallace's theory of evolution by natural selection was revolutionary because it _____.

Which of the following best describes the main difference between complete and incomplete metamorphosis in insects?

How does the recombination of linked genes contribute to natural selection?

Which consequence occurred when sea otters were overhunted along the Pacific coast?

Which of the following best explains how an individual's evolutionary fitness is measured?

Which of the following lists correctly identifies the four main principles of natural selection as described by Charles Darwin?

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?