Examlex
Which of the following is true about a competitive market supply curve?
Shield Volcano
A broad, domed volcano with gently sloping sides, built by the eruption of fluid, basaltic lava.
Scoria Cone
A small, steep-sided volcanic cone made of glassy lava fragments that have been ejected from a volcanic vent and solidified in the air.
Caldera
A sizable volcanic cavity, usually created by a significant eruption that causes the volcano's mouth to collapse.
Vesicular Basalt
A type of basalt that is porous due to gas bubbles (vesicles) trapped within the lava as it cools on the Earth's surface.
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