Ocean ecosystems are sensitive to the chemical composition of the water. Any excess compounds can upset the balance and cause damage to organisms in very three short sentences describe how reducing consumption of fossil fuels can help the ocean ecosystem.

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Reducing consumption of fossil fuels can decrease the amount of carbon dioxide being released into the atmosphere and absorbed by the ocean, which can help prevent ocean acidification. This can help protect marine life, such as coral reefs and shellfish, that are sensitive to changes in pH levels. Additionally, a decrease in fossil fuel consumption can reduce the amount of pollutants, such as mercury and nitrogen, that are deposited into the ocean and harm marine organisms.