The tails of dolphins and crocodiles are different in structure but similar in function. what are these kinds of structures called?

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Name one similarity and one difference between the morphology of a brachiopod and a bivalve