When developing a business plan for a greenhouse, one of the things a grower will wish to do is calculate crop costs and crop yield estimates using what base unit? per acre

per square foot

per building

per square yard

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

9. wind power creates pollution. water air soil noise

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