The image below shows a lava dome that never left the volcanic crater.What is the likely composition of the rocks that make up this lava dome? 
Definitions:
Labor
The human effort, including physical and mental skills, employed in the production of goods and services within an economy.
Demand
The desire accompanied by the ability to pay for goods or services, determining the quantity that will be bought at a given price level.
Marginal Revenue Product
The additional revenue generated from the sale of one more unit of a good or service produced as the result of one more unit of an input.
Wage Rate
The fixed amount of compensation or payment received by an employee from an employer in exchange for work or services performed.
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