In the Diagram Below,the Importance of the Erupting Volcano at "B

question 78

Multiple Choice

In the diagram below,the importance of the erupting volcano at "B" for the global carbon cycle is that

• A)CO₂dissolved in magma rises with the magma and is released from solution into the atmosphere as pressures decrease,warming the Earth.
• B)the heat from the erupting volcano warms the atmosphere to such an extent that it can no longer retain CO₂in it,causing it to condense and cool the Earth.
• C)as the magma begins to cool when it reaches the surface,atmospheric CO₂is absorbed into it,cooling the Earth.
• D)atmospheric CO₂gets drawn into the volcanic caldera as soon as the magma exits the chamber,cooling the Earth.

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Definitions:

External Cost

A cost borne by someone who does not participate in the transaction or decision that led to the cost, often associated with negative externalities.

Total Surplus

The sum of consumer and producer surplus in a market, indicating the overall economic benefit to society from market transactions.

Socially Efficient

An economic condition where the allocation of resources maximizes social welfare, often where marginal cost meets marginal benefit.

Negative Externalities

Costs that are suffered by a third party as a result of an economic transaction or activity, for which they are not compensated.