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ae Ce EETIL | +) Nitro Type | Compet_. o Oo Wolves present E04 E 0. 3 Lh go 2 02 = e ze a o. + E 0 I Rest Travel Hunt Feeding on Vigilance Carcasses Behavior Figure 2. Coyote behavior in the presence and absence of wolves. Error bars represent error within a range of 5% from the mean. Following the reintroduction of wolves to Yellowstone National Park, researchers measured the mean height of young aspen trees in upland and streamside areas. Table 1. Mean Height of New Aspen Growth in Early Spring Year 1998 2010 Upland 31 cm 176 cm Streamside 33 cm 237 cm Which of the following is the most likely cause of the change in mean aspen height from 1998 to 2010 ? The reintroduction of wolves led to a decrease in the population of elk, allowing aspen trees to grow taller. The reintroduction of wolves led to a decrease in the population of small mammals, allowing aspen trees to grow taller. The reintroduction of wolves led to an increase in the number of carcasses that provided fertilizer for young aspen trees. The reintroduction of wolves led to an increase in the number of carcasses, so coyotes no longer ate young aspen trees