If we had three different heights of giraffes in an area, and all the lower trees(food sources) were destroyed in a fire, what would happen to the giraffe population? a. rapid evolution to taller giraffes

b. shorter giraffes would learn to jump

c. there would be no change

d. a slower than average evolution to the medium height

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 element does susan b. anthony include in this passage to strengthen her argument?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an