Answer
As CO2 levels have increased, the Earth's atmosphere has responded by trapping more heat, primarily through the greenhouse effect. The greenhouse effect is a natural process that helps keep the Earth's surface warm enough to support life. However, human activities have intensified this effect by adding more greenhouse gases, especially CO2, to the atmosphere. The enhanced greenhouse effect is causing the Earth's surface and the lower atmosphere to warm, leading to global warming. As CO2 levels continue to increase, temperatures in the lower atmosphere are projected to rise further, with potential impacts on weather patterns, sea levels, and ecosystems.
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