This era of human impact on the environment and the ocean is called the Anthropocene, and the main problem is that we produce energy by burning fossil fuels and emit bast amounts of carbon dioxide to the atmosphere, leading to global warming. This leads to changing ocean currents, wind currents, and warming patterns, as well as sea level rise and the retreat and melt of sea ice. The two consequences of global warming are the warming of the ocean, which threatens marine ecosystems, and ocean acidification, which diminishes carbonate concentrations in the oceans andeans that calcifying organisms can’t produce their shells. It is hard to predict what the precise regional variations and implications of climate change will be on the ocean.
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