Soru

The following passage is about the ecological effects of reintroducing wolves to Yellowstone National Park.

Restoring the Balance

[1]
In 1995, conservationists reintroduced gray wolves to Yellowstone National Park, ending a seventy-year absence of the apex predator. During the wolves’ absence, the park's elk population had soared, leading to severe overgrazing of young willow, aspen, and cottonwood trees along valley bottoms. Lacking competition and predators, the elk had stripped the riverbanks bare, causing significant erosion and altering the local ecosystem.

[2]
The return of the wolves quickly initiated a phenomenon known as a trophic cascade. As wolves hunted the elk, the herbivores' behavior shifted; they began avoiding low-lying areas where they could be easily cornered. Consequently, the vegetation along the riverbanks began to recover. Willows and aspens grew taller, providing shade that cooled the water, which in turn benefited native trout species.

[3]
With the regrowth of trees, songbirds returned to the valleys, and beavers found the materials they needed to build dams. Beaver ponds created wetlands that supported insects, amphibians, and waterfowl. By modifying the behavior of a single herbivore, the wolves indirectly reshaped the physical geography and biological diversity of the entire park, proving that predators are essential to maintaining healthy ecosystems.

Suppose the writer’s goal had been to write an essay that explains how the reintroduction of a predator can restore biodiversity and physically alter an ecosystem's landscape. Would this essay accomplish that goal?