An "idiom" or "figure of speech".
These phrases are often referred to as idioms or expressions that encourage people to think more deeply, consider alternative perspectives, or look beyond the obvious. They suggest the importance of investigating further or gaining a more comprehensive understanding of a situation or issue.
Easy money.
just a sink Below surface (grade) sink
Molten rock material below the earth's surface is called magma.lava
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I would call this convection currents in the mantle.
I would call this convection currents in the mantle.
An intrusive igneous rock.
An intrusive igneous rock.
A submarine is a ship that can travel underwater.
Depending on which surface you want to name, perhaps the table -- the top of the cut stone, or a facet. There are many names for the facets. Learn more, below.
That would be a snorkel.