Examlex
REM sleep is the only stage of sleep in which we dream or experience mental activity.
Igneous
Refers to rocks or minerals that solidified from molten or partly molten material, indicative of volcanic processes.
Sediment
Grains and other fragments that originate from the weathering and transport of rocks, and the unconsolidated deposits that result from the deposition of this material.
Transported
Refers to materials that have been moved from their original location to a new place by natural processes such as erosion or glaciation.
Metamorphic Rock
A type of rock formed through the alteration of pre-existing rocks in response to high heat, pressure, and chemically active fluids.
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