Ocean acidification is a growing environmental concern. Which of the following statements best describes this phenomenon?
1
Ocean acidification is caused by the depletion of the ozone layer, leading to increased radiation and higher acidity levels in seawater.
2
Ocean acidification occurs when excess carbon dioxide in the atmosphere reacts with seawater to form acid, decreasing the pH of the ocean.
3
Ocean acidification is the result of a decrease in seawater temperature, causing an increase in the solubility of CO2 and thus increasing the ocean's acidity.
4
Ocean acidification is primarily caused by volcanic activities under the ocean, leading to the release of acidic compounds.