In order for natural selection to have produced the long necks of giraffes, what must have been true about the evolutionary history of giraffes? Need some help with this homework question for my Life Science class.

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i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

answer;

c. a tree whose roots are surrounded by wet sand.

explanation;

water stress is an important factor limiting the growth and productivity of forests.water stress is the most often cited cause of poor survival and growth of woody landscape plants.

-insufficient soil moisture is the most common form of water stress, but excess moisture that leads to poor soil aeration (hypoxia) can also result in reduced plant vitality. a tree whose roots are surrounded by wet sand would be least likely to experience water stress.