Deep-bodied fish are common in coral reefs where species have to make quick turns in very tight quarters. Explain how body shape and fin arrangement in these species are related to movement in this type of habitat.

What did the first language sound like

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

What percentage of light hits earth's surface directly?