Which is an example of a pandemic? a whooping cough b black death c smallpox d diabetes

2. what process do mrna and trna work together to complete? (3 points)

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

In general, are there any major differences that you can see? explain