Biogeochemical processes refer to the natural cycles that involve the movement of elements and compounds through living organisms and the environment. These processes include the cycling of essential nutrients like carbon, nitrogen, and phosphorus, which are vital for life. They help maintain ecosystem balance by recycling materials and supporting plant and animal growth. These processes occur in various ecosystems, including forests, oceans, and wetlands. For example, the carbon cycle involves the absorption of carbon dioxide by plants during photosynthesis, which is then passed through the food chain. Understanding these processes is crucial for addressing environmental issues like climate change and pollution.