'The Gutenberg Discontinuity is the boundary that separates the Earth's mantle from this part'
the core
C IN SCIENCE: The Gutenberg Discontinuity is the boundary that separates the Earths mantle from this part
The Gutenberg Discontinuity is the boundary that separates the Earth's mantle from this part
The Gutenberg Discontinuity is the boundary that separates the Earth's mantle from this part
"C" IN SCIENCE
the core
"C" IN SCIENCE