7.7 Analyzing The Science
The following graph shows the numbers of Kaibab deer on the isolated Kaibab Plateau in northern Arizona. President Theodore Roosevelt declared it a National Game Preserve in 1906 and predator removal was encouraged to protect the deer. Between 1907 and 1917, more than 600 mountain lions were removed; 200 more were removed over the next 20 years. Wolves were exterminated by 1926 and more than 7000 coyotes and 500 bobcats were also removed. The deer population increased, and by 1915 there was significant damage to the grasses, shrubs, and trees that were being eaten by the deer.
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INTERPRETATION
Question 7.13
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