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Reducing consumption of fossil fuels can help the ocean ecosystem by minimizing the release of greenhouse gases, particularly carbon dioxide (CO2), into the atmosphere. When fossil fuels are burned for energy, CO2 is emitted and contributes to climate change. This increase in atmospheric CO2 leads to ocean acidification, as a significant portion of the excess CO2 is absorbed by seawater. Ocean acidification makes it harder for marine organisms, such as corals and shellfish, to build and maintain their shells, impacting their growth and survival. By reducing fossil fuel consumption and transitioning to cleaner and renewable energy sources, we can mitigate climate change and lessen the harmful effects on the ocean ecosystem.