Final answer:
Grizzly bears expanding their habitat north due to climate change are overlapping with polar bear territories, resulting in hybrid grolar bears and potential disruptions in the food web due to inter-species competition for resources.
Step-by-step explanation:
When discussing finding grizzly bears in unexpected areas, it becomes clear that the topic involves understanding grizzly bear ecosystems and the impact of climate change. Due to warming global temperatures, grizzly bears (Ursus arctos horribilis) are moving farther north, which places them in overlapping territories with polar bears (Ursus maritimus). This new overlap has led to the creation of a grolar bear, a hybrid species first discovered in the wild, illustrating the direct consequences of climate change on animal habitats and species diversification. If polar bears move to land as a response to the loss of sea ice, it will disrupt the existing food web, as two apex predators—polar bears and grizzly bears—will compete for similar resources on land, potentially straining the balance of the ecosystem.