What is a tectonic plate?
A. the crust and underlying rigid mantle above the asthenosphere
B. the crust and underlying plastic asthenosphere above the mantle
C. the plastic asthenosphere above the rigid core and upper mantle
Answer: A
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The first native people moved to Greenland about ________ during a warm climatic period
A) 5000 years ago B) 10,000 years ago C) 15,000 years ago D) 20,000 years ago
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