Examlex
The three main methods that governments use to cope with an external cost of production include all of the following EXCEPT
Caldera
A vast crater on a volcano, often resulting from a major eruption and subsequent collapse of the volcano's opening.
Magma
Igneous rocks form from this liquid rock that exists below the Earth's surface, cooling and solidifying over time.
Past Eruptions
Historical instances of volcanic activity where molten rock (lava), volcanic ash, and gases were expelled from a volcano.
Central Crater
The main depression at the summit of a volcano, formed by explosive ejection of material and collapse of the area above the magma chamber.
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