Final answer:
To help polar bears, humans should focus on reducing emissions, protecting habitats, and funding conservation, rather than ineffective measures like relocation or displacing other species.
Step-by-step explanation:
Humans can help save polar bears and other species affected by climate change by pursuing conservation efforts that mitigate the impact of melting sea ice and changing precipitation patterns. Relocating polar bears closer to the equator or planting vegetation in the seabed would not be effective. Breeding bears in captivity and releasing them could be temporarily helpful but doesn't address the root cause. Displacing habitats of the bears' rivals may create ecological imbalances and is not a sustainable solution. Instead, humans should focus on reducing greenhouse gas emissions, protecting polar bear habitats, and funding climate change research and conservation programs. These actions can help maintain the sea ice that polar bears require for hunting and survival, and will also benefit the broader ecosystem that depends on the Arctic's unique climatic conditions.