Marine biogeochemistry is the study of the chemical, physical, and biological processes that occur in ocean environments. It examines how nutrients, such as nitrogen and phosphorus, cycle through marine ecosystems and how these cycles affect marine life. This field helps scientists understand the interactions between living organisms and their chemical surroundings, which is crucial for maintaining healthy oceans. Research in marine biogeochemistry also focuses on the impact of human activities, such as pollution and climate change, on ocean chemistry. By studying these effects, scientists can develop strategies to protect marine ecosystems and ensure sustainable use of ocean resources, contributing to the overall health of our planet.