Explain how much the post-hurricane birds varied from the original birds after 1 million years of natural selection. How do adaptations and natural selection explain the changes? Use the following terms or phases in your explanation: natural selection, random mutation, nonrandom selection of favorite traits, reproduction, genetic variation, and extinction. Be sure to identify the trait you were following in your opening statement.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above