The article "Biogeochemistry: an Analysis of Global Change" explores how different processes and reactions in the atmosphere, lithosphere, and biosphere impact the Earth's ecosystems. It delves into biogeochemical cycling on land, in freshwater environments, and in the sea. The researchers analyze global water, carbon, nitrogen, phosphorous, and sulfur cycles to understand how these elements move through the environment. The key findings highlight the interconnectedness of these cycles and their role in shaping the Earth's climate and ecosystems.