Molecules consisting only of carbon hydrogen and oxygen atoms make up a large part of a plant cell wall. these molecules are classified as

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

Explain how organisms could be harmed by high levels of salt from roadways?

How energy move through ecosystem ?