HELP ME. don't know what this means

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

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air