I would think population density
They can be replaced naturally.
No human inhabitants because Polar vortex win lower temperatures in the Antarctic .
I think Sweden but Germany and Greece are taking quite a few
Answer:
The Arctic and Antarctic have the same variations of day and night, but they are in opposite parts of the year.
Explanation:
The Arctic is the region at and around the Northern Pole, while the Antarctic is the continent at and around the Southern Pole. These are the two coldest areas on Earth, and even in what is considered summer the temperatures are very low. They have a lot of similarities but also some differences.
One feature that falls in both categories, similarity, and difference, are the variations of day and night. The similarity is in the fact that both regions experience sunlight constantly for half a year, and then experience night constantly for half a year. The difference though is in the fact that they occur in opposite parts of the year. When the Arctic has half a year of light, the Antarctic has half a year of night and vice versa, and this is due to the tilted axis of Earth.
