These birds are invasive because they overpopulate and have no local predators. They take over the food supply for animals that are native to the tundra.
The arctic weasel is an invasive species that affect the food supply for native predators. They eat small rodents while hiding behind higher order predators in the area.
The polar bear is an endangered species due to climate change. The ice that is melting is causing their food supply to disappear.
The caribou is an endangered species due to climate change. The increases temperatures are causing increased rainfall. The increased rainfall is making the mosses and plants they feed on be buried under the snow.
Lemmings are so successful in the tundra because they are able to burrow so deep into the snow. This helps keep them warm and keep them safe from predators. Their insulated fur also helps them to survive.
Arctic hares are so successful in tundra because they are able to bend in with the snow. Also, they hang out in groups which helps provide warmth and protection. If one reacts they all react.
Ground squirrels are so successful because they are able to burrow in the winter. The cold allows their heart to snow and they sink into a semi-vegetative state. They are also able to burrow so deep to hide from predators surviving on the air bubbles in the snow.
Aquatic plant that has learned to store more energy when not growing. Grows near water and close to the ground to avoid harsh winds.
This plant is most successful because it grows close to the ground and has tiny hairs on stem to help insulate it and keep it warm in such cold conditions.
Dimond leaf willow
This soft bendable plant grows low along the tundra floor. Growing lows allows it to avoid cold winds. The premature leafs are picked and used as a source of vitamins.