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Water is the medium of the oceans, the medium which carries all the substances and elements involved in the marine biogeochemical cycles. Water as found in nature almost always includes dissolved substances, so water has been described as the "universal solvent" for its ability to dissolve so many substances.
Ocean deoxygenation is the expansion of oxygen minimum zones in the oceans as a consequence of burning fossil fuels. The change has been fairly rapid and poses a threat to fish and other types of marine life, as well as to people who depend on marine life for nutrition or livelihood.
In recent decades, the ocean has acted as a sink for anthropogenic CO 2, absorbing around a quarter of the CO 2 produced by humans through the burning of fossil fuels and land use changes. [9] By doing so, the ocean has acted as a buffer, somewhat slowing the rise in atmospheric CO 2 levels.
The main cause of these changes are the emissions of greenhouse gases from human activities, mainly burning of fossil fuels and deforestation. Carbon dioxide and methane are examples of greenhouse gases. The additional greenhouse effect leads to ocean warming because the ocean takes up most of the additional heat in the climate system. [3]
The longer we delay climate action, the worse it will be.
Fossil fuels have been important to human development because they can be readily burned in the open atmosphere to produce heat. The use of peat as a domestic fuel predates recorded history. Coal was burned in some early furnaces for the smelting of metal ore , while semi-solid hydrocarbons from oil seeps were also burned in ancient times, [ 29 ...
The U.S. Department of Energy says sustainable aviation fuel can help reduce carbon emissions from flights by up to 70%. First flight using 100% sustainable jet fuel crosses the ocean Skip to main ...
A fossil jawbone found by a British girl and her father on a beach in Somerset, England belongs to a gigantic marine reptile dating to 202 million years ago that appears to have been among the ...