Global warming is primarily driven by the increase of greenhouse gases in the atmosphere, particularly carbon dioxide (CO2). The following factors have significantly contributed to this rise:
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Transportation: The widespread use of cars, trucks, and other vehicles that run on fossil fuels contributes a significant amount of CO2 emissions. The combustion of gasoline and diesel fuels releases CO2, leading to higher concentrations of greenhouse gases in the atmosphere.
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Power Generation: Fossil fuel-based power plants that burn coal, oil, or natural gas are major sources of CO2 emissions. As the global demand for electricity grows, particularly in developing countries, these power plants continue to be a leading contributor to greenhouse gas emissions.
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Industrial Activities: Factories and industrial processes often rely on fossil fuels and can also emit CO2 and other greenhouse gases as byproducts of production. This includes emissions from the manufacturing of cement, steel, and other materials.
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Deforestation and Land Use Changes: While not mentioned explicitly in your options, deforestation significantly contributes to global warming as it reduces the number of trees that can absorb CO2. Additionally, land use changes for agriculture can release stored carbon in soil and vegetation.
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Agricultural Practices: Livestock farming generates methane (another potent greenhouse gas), and agricultural practices can lead to the release of nitrous oxide, further contributing to global warming.
In summary, all of the factors you mentioned – transportation, power generation, and industrial activities – contribute to global warming through the release of carbon dioxide and other greenhouse gases into the atmosphere.