Charles Darwin observed a unique beak size visited.
and shape in the finch population of each of the Galapagos Islands
th.
Which is the most likely cause of the observed variation?

According to the cladogram, which organisms have roundworms as a common ancestor?

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

Select the true statements about eubacteria. most live as decomposers and heterotrophs. most only thrive in a narrow range of environments. certain eubacteria are responsible for food poisoning. eubacteria thrive in extreme environments.