Adam is built. as a result, the water flowing through a marsh stops completely. what is most likely to be an effect of this change? a. animals will take over the marsh when plants die. b. plant populations will thrive in the calmer marsh water c. photosynthesis rates will increase, boosting plant life d. oxygen levels will decrease, harming plants and animals

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

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.