Carbon Cycle. The carbon cycle is the circulation and transformation of carbon back and forth between living things and the environment. What Is Carbon?. Importance of Carbon. Building block of life Fixed amount CO 2 is only of the atmosphere (0.04%) Energy balance of the planet
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The carbon cycle is the circulation and transformation of carbon back and forth between living things and the environment.
Mandale Limestone Quarry
Carbon exists in the nonliving environment as:
CH4 + 2 O2 CO2 + 2 H2O + energy
Plants use carbon to make food
Decomposers break down dead things, releasing carbon to atmosphere and
Plants and animals die
Fossil fuels are burned; carbon is returned to atmosphere
Animals eat plants and take in carbon
Bodies not decomposed — after many years, become part of oil or coal deposits
Carbon slowly released from these substances returns to atmosphereCarbon Cycle Diagram
86% of global primary energy consumption is fossil fuels.
Burning fossil fuels have serious impact on the carbon cycle.