In mature plant cells, 90% or more of the volume may be occupied by the
a. hyaloplasmb. ergastoplasmc. central vacuoled. all of the above

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

Which sequence correctly shows the path of carbon dioxide during repiration?

Did you know that a blue wales tongue weighs more than an elephant?