Answers

2016-07-02T18:32:53+08:00
The boundary surface between the earth's crust and the mantle
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2016-07-02T19:01:49+08:00
The boundary surface between the earth's crust and the mantle, lying at a depth of about 6–7 miles (10–12 km) under the ocean bed and about 24–30 miles (40–50 km) under the continents.
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