The carbon cycle involves the movement of carbon through both living organisms and non-living components of the ecosystem:
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Photosynthesis: Plants absorb carbon dioxide (CO₂) from the atmosphere and use it to produce glucose during photosynthesis, incorporating carbon into organic molecules.
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Consumption: Animals eat plants (and other animals), taking in carbon compounds and using them for energy and growth, thus moving carbon through the food chain.
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Respiration: Both plants and animals release CO₂ back into the atmosphere when they respire, breaking down organic matter for energy.
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Decomposition: When organisms die, decomposers (like bacteria and fungi) break them down, releasing stored carbon back into the soil and atmosphere as CO₂ or organic matter, completing the cycle.
This continuous cycling maintains the balance of carbon in the ecosystem.