Poor bears hunt for wrenched seals by waiting for them to emerge from breathing holes in the ice, which a biotic change made decrease a pool bears ability to hunt increase ceiling population increased ice cover increased competition or increased temperatures.
The correct answer is "increased ice cover." When ice cover increases, it decreases the number of breathing holes available for seals to use. As a result, bears have a harder time hunting seals, causing them to have a smaller pool of prey to hunt from. This may result in poor hunting for bears and can have negative implications for their population.
