Which of the following would be the most effective long-term solution to fighting desertification in the sahel?
a. planting trees throughout the sahel
b. constructing walls around villages to act as barriers against approaching sands
c. dropping loads of water over large areas of the sahel
d. using plows to remove sands from inhabited locations

there are more but this is what i can come up

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the three roles stated in the dialogue develop the siblings' personalities.

lloyd's personality looks like a trademarketer

dana's personality is afraid from lloyd's behavior and the oldest sister is a decided person who tries to solve any conflict