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Asthenosphere
A soft, solid layer of the Earth’s mantle that flows slowly and moves the Earth’s plates. It’s located approximately 100-200 kilometres below ground level.

Asthenosphere
Word of the day
Ruperts Land >> The name of the land that was granted to the Hudson's Bay Company in the 1600s by Charles II. It was what is now Manitoba, Saskatchewan, Yukon, Alberta and some of the Northwest Territories.