Examlex
Write the first four terms of the arithmetic sequence with the given first term and common difference. a1 = 10, d = -2
Heat And Pressure
The combination of high temperature and force applied to a material, often leading to physical or chemical changes.
Igneous Rock
Rock formed through the cooling and solidification of magma or lava, foundational to the Earth's crust.
Subsurface Mining
A method of extracting minerals and ores from beneath the earth's surface, involving tunnels or shafts, as opposed to open-pit or surface mining.
Room-And-Pillar
A method of mining that involves excavating rooms while leaving columns or pillars of material to support the mine roof.
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