You are in your laboratory studying a tumor. you want to see as many details about the structure of the tissue and its cells as possible to try to determine what caused the tumor's development. you have the best microscope available. check the option below that would allow you to see the greatest amount of detail. use a microscope with many objectives. start by focusing the cells using low power. focus on the cells using high power. find previously released photos of the cells.

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

What part of the brain is highlighted in the diagram below?

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.