What are geochemical cycles? Describe the carbon cycle using a neat diagram.

Geochemical cycles refer to the movement and transformation of chemical elements and compounds through various environmental reservoirs, such as the atmosphere, hydrosphere, lithosphere, and biosphere. These cycles are vital for sustaining life and maintaining the balance of Earth's systems. They involve the processes through which elements like carbon, nitrogen, phosphorus, and sulfur circulate through the Earth's components, often driven by natural processes such as weathering, biological activity, volcanic eruptions, and human interventions.

The carbon cycle, one of the most important geochemical cycles, describes the continuous movement of carbon among the Earth's major spheres. Carbon is essential for life, as it forms the backbone of organic molecules, including proteins, fats, and nucleic acids. It exists in various forms, including carbon dioxide (CO₂), methane (CH₄), and organic compounds, and is stored in various _____ _____ ________ _____ _________ ______ ________ __________ __________ ___ ________.
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