Please note none of these answers were taken from any website or plagiarized. Hope it helps!
1. How do tundra ecosystems in biodiversity compare in biodiversity to other types of ecosystems?
Answer: Ecosystems in the arctic tundra are an example of those where there are fewer species overall than in other kinds of ecosystems.
2. What is a niche?
Answer: a role that a species plays in the ecosystem
3. Describe a polar bear's niche.
Answer: Some animals gain from polar bears' hunting of seals. A polar bear will leave behind significant portions of a seal after eating all of it. In tundra environments, these leftovers are a source of food for Arctic foxes, gulls, and other birds, particularly during the chilly winter months when there is nothing to eat. Healthy polar bear populations can have a good effect on other species' numbers, such as those of birds or Arctic foxes. Numerous other species are harmed when polar bear populations drop.
4. Who else benefits from polar bear hunting?
Answer: Arctic foxes, gulls, and other birds
5. How does low biodiversity impact the stability of a tundra ecosystem?
Answer: The species that provide resilience to an ecosystem are therefore far more likely to be found in biologically diverse groups because as a network accumulates species, there may be a greater chance that any one of them will have evolved to adapt to a changing environment.