Which of the following is a true statement about hypotheses? a. it is not possible to test hypotheses through scientific investigations. b. even if hypotheses are not supported by data, they can still be valuable. c. if data does not agree with a hypothesis, the hypothesis should be changed to match the data. d. data collected during scientific investigations must always support hypotheses.

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

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems