The carbon cycle recycles carbon in the earth and at G, carbon dioxide is released into the atmosphere at G, thus contributing to the carbon cycle.
The carbon cycle is a diagrammatic illustration of a cycle which describes how carbon is recycled in the earth.
The carbon cycle shows the process of how carbon is released to the atmosphere and how it is returned back to the earth's crust.
The process marked G illustrates combustion releasing carbon dioxide to the atmosphere.
The energy transformation at G is chemical energy to heat energy.
Therefore, the carbon cycle recycles carbon in the earth and at G, carbon dioxide is released into the atmosphere at G, thus contributing to the carbon cycle.
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