Recall by how much the acid levels in the ocean have increased by over the past 250 years.
Question
Recall by how much the acid levels in the ocean have increased by over the past 250 years.
Solution
The acidity levels in the world's oceans have increased by about 30% over the past 250 years. This increase is largely due to human emissions of carbon dioxide (CO2) from the burning of fossil fuels, deforestation, and other industrial processes. The ocean absorbs about a quarter of these emissions, which react with seawater to form carbonic acid, increasing the ocean's acidity.
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