Mammals have backbones. Which word in the list below is a synonym for backbones?

What heat is removed how does a gas become a liquid

One group of reptiles, characterized by the fossil ark metal x

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