What prediction can you make from the diagram shown below? Image depicts four very similar birds with slight variations in the shapes of their beaks. All of these birds share a common ancestor. All of these birds adapted to the same conditions. All of these birds developed at exactly the same time. All of these birds produced identical offspring.

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

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 kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content