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Which of the following is the best description of how saguaro cacti evolved to have long roots?a) Saguaro cacti needed to develop longer roots to survive in the desertb) Mutations occurred because the climate of Arizona and Mexico was hotc) Saguaros with short roots produced fewer seeds each year than saguaros with longer roots d) Each generation of saguaro cacti worked hard to grow roots as long as possiblee) Changes like this depend on many factors, so it is impossible to answer

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