What Are the Smaller Secondary Volcanic Vents on a Large

question 61

Short Answer

What are the smaller secondary volcanic vents on a large composite volcano like Mt.Etna called?

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Definitions:

Marginal Benefit

The supplementary enjoyment or advantage derived from consuming an extra unit of a good or service.

Marginal Cost

The amount of money needed to manufacture an extra unit of a good or service.

Diagram

A simplified drawing or plan that represents the essential features of something, often used for explanation or clarification.

Coase Theorem

A principle that asserts if trade in an externality is possible and there are no transaction costs, parties can negotiate to solve the problem privately.