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Final answer:The Great Global Warming Swindle suggests that the increase in atmospheric CO2, primarily from burning fossil fuels and deforestation, has led to a rise in global temperatures due to the enhanced greenhouse effect.Explanation:According to the Great Global Warming Swindle, the link between CO2 and temperature change is drawn by observing the correlation between the rise of atmospheric carbon dioxide and the increase in global temperature. Since the mid-20th century, atmospheric CO2 levels have risen from about 280 parts per million (ppm) to 392 ppm in 2011, paralleling an increase in the Earth's average surface temperature by about 0.8°C, which is mostly attributed to human activities such as fossil fuel combustion and deforestation.The science behind this link is that CO2 is a greenhouse gas, and increasing concentrations in the atmosphere enhance the greenhouse effect that warms the planet. This is significant because it means that human actions have directly contributed to the altering of the planet's climate system. The role of other gases and feedback mechanisms, such as water vapor and the loss of snow and ice cover, also influence how temperature rises in response to increased greenhouse gas concentrations....