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.

Question

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.

Quizplus · Accepted Answer

CO₂ dissolved in magma rises with the magma and is released from solution into the atmosphere as pressures decrease, warming the Earth. This process is known as volcanic outgassing and is one of the natural sources of carbon dioxide in the atmosphere, which plays a crucial role in the global carbon cycle.

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