heThe Tundra Biome Is globally important because, the arctic animals live there. The arctic animals are in a food chain and if that food chain didnt exist there would be alot of extinct animals. If there are extinct animals then the natural world wouldnt work the same because other animals rely on them. The animals that rely on them are the ones that migrate there in the summer or winter. that is why the Tundra biome is globally important.