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and where are the option ??
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The Moho is the boundary between the crust and the mantle in the earth. Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Mohorovicic' (1857-1936) who discovered it. The boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.
The Mohorovičić discontinuity usually referred to as the Moho discontinuity or the Moho, is the boundary between the Earth's crust and the mantle. It is defined by the distinct change in velocity of seismological waves as they pass through changing densities of rock.
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asteroids are made of metals or rocky materials while comets are made up of ice
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is about 55 miles at its narrowest point. so around 50 miles would be the answer.
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cancer, Parkinson's Disease, asthma, non-Hodgkin's lymphoma, Leukemia, ADHD, depression, and anxiety.
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