Final answer:
Global warming and climate change will impact the bighorn sheep's environment, resulting in density-independent and density-dependent limiting factors.
Step-by-step explanation:
Global warming and climate change will have a significant impact on the bighorn sheep's environment, leading to more limiting factors for the species. One density-independent limiting factor is the decrease in snowfall and sea ice due to warming in the Arctic. This will affect the sheep, as polar bears, their main source of food, rely on the ice to hunt seals. A density-dependent limiting factor could be competition for resources, as the shifting ranges of species due to climate change may force the bighorn sheep to come into contact with other species they normally wouldn't encounter, leading to increased competition for food and habitat.