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  2. Polar regions of Earth - Wikipedia

    en.wikipedia.org/wiki/Polar_regions_of_Earth

    Visualization of the ice and snow covering Earth's northern and southern polar regions Northern Hemisphere permafrost (permanently frozen ground) in purple. The polar regions, also called the frigid zones or polar zones, of Earth are Earth's polar ice caps, the regions of the planet that surround its geographical poles (the North and South Poles), lying within the polar circles.

  3. Polar climate - Wikipedia

    en.wikipedia.org/wiki/Polar_climate

    Every month a polar climate has an average temperature of less than 10 °C (50 °F). Regions with a polar climate cover more than 20% of the Earth's area. Most of these regions are far from the equator and near the poles , and in this case, winter days are extremely short and summer days are extremely long (they could last for the entirety of ...

  4. Polar ecology - Wikipedia

    en.wikipedia.org/wiki/Polar_ecology

    Polar ecology is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the Northern Hemisphere , and it contains land and the islands that surrounds it.

  5. Polar desert - Wikipedia

    en.wikipedia.org/wiki/Polar_desert

    Polar deserts are the regions of Earth that fall under an ice cap climate (EF under the Köppen classification). Despite rainfall totals low enough to normally classify as a desert , polar deserts are distinguished from true deserts ( BWh or BWk under the Köppen classification) by low annual temperatures and evapotranspiration .

  6. The Polar Vortex Explained

    www.aol.com/news/polar-vortex-explained...

    When the polar vortex is strong, cold air is less likely to plunge deep into North America or Europe. Picture this strong vortex fencing off the coldest air from the U.S. and Europe.

  7. Polar seas - Wikipedia

    en.wikipedia.org/wiki/Polar_seas

    Polar seas is a collective term for the Arctic Ocean (about 4-5 percent of Earth's oceans) and the southern part of the Southern Ocean (south of Antarctic Convergence, about 10 percent of Earth's oceans). In the coldest years, sea ice can cover around 13 percent of the Earth's total surface at its maximum, but out of phase in the two hemispheres.

  8. Arctic - Wikipedia

    en.wikipedia.org/wiki/Arctic

    The word Arctic comes from the Greek word ἀρκτικός (arktikos), "near the Bear, northern" [4] and from the word ἄρκτος (arktos), meaning bear. [5] The name refers either to the constellation known as Ursa Major, the "Great Bear", which is prominent in the northern portion of the celestial sphere, or to the constellation Ursa Minor, the "Little Bear", which contains the celestial ...

  9. 10 Amazing Facts About Polar Bears

    www.aol.com/news/10-amazing-facts-polar-bears...

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