Besides the tailpipe, hydrocarbons can also be emitted from the

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

Twind is considered to be an abiotic factor because it.?

How can you tell the difference between rough er from smooth er?