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Anthropogenic climate change is supported by a wide range of robust, interlinked evidences drawn from atmospheric science, cryospheric studies, oceanography, and ecological observations. One of the most direct evidences is the rapid increase in greenhouse gas concentrations, particularly carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O), since the Industrial Revolution. Ice core records from Antarctica and Greenland reveal that pre-industrial CO₂ levels were about 280 ppm, whereas current concentrations have exceeded 420 ppm. This sharp rise corresponds closely with fossil fuel combustion, deforestation, and industrial activities, clearly indicating human influence ___ __________ ____ ___ _____.
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