Question

humans have not been included in the model above. if humans were to remove the gray wolves from yellowstone national park what would happen to the overall stability of the ecosystem? the ecosystem would remain stable because plant life would continue to thrive without interference from predators. the ecosystem would become less stable because the absence of wolves would lead to an overpopulation of prey species, causing overgrazing and habitat degradation. the ecosystem would become more stable as prey populations increase and provide more food for other animals. there would be no significant impact on the ecosystem because other predators would immediately replace the role of gray wolves.

Explanation:

In an ecosystem, predators like gray wolves play a crucial role in controlling prey populations. Without wolves (predators), prey species (e.g., elk, deer, bison) would likely over - populate. Over - populated herbivorous prey would overgraze on plants (such as aspen and willow trees). Overgrazing can lead to habitat degradation. A degraded habitat affects all species in the ecosystem, reducing its overall stability.

• Option 1 is incorrect because plants are not directly affected by wolves (wolves are predators of herbivores, not plants). Also, over - populated herbivores would damage plant life.
• Option 3 is incorrect because an over - increase in prey populations (due to lack of predation) leads to overgrazing, not increased stability.
• Option 4 is incorrect because there is no indication in the given model that other predators would immediately replace the role of gray wolves.

Answer:

The ecosystem would become less stable because the absence of wolves would lead to an overpopulation of prey species, causing overgrazing and habitat degradation.