Examlex
What are neurotransmitters?
Sandstone
A sedimentary rock consisting of sand-sized mineral particles or rock fragments.
Basaltic Lava
A type of magma or lava that is low in silica and has a relatively low viscosity, leading to smoother flow characteristics.
Obsidian/Glass
A natural volcanic glass formed from the rapid cooling of acidic lava, known for its conchoidal fracture and sharp edges.
Ash
Fine particles of volcanic rock and glass created during volcanic explosions, which can be carried long distances by the wind.
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