Canadian Geographic
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Mantle
A mobile layer of rock between the Earth’s crust and core. The rock is brittle and cool near the crust but becomes warm and soft closer to the core. The mantle is roughly 2,800 kilometres thick.

Mantle
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.