Humans are primarily responsible for climate change through activities that increase greenhouse gas emissions. Burning fossil fuels for energy and transportation releases large amounts of carbon dioxide (CO₂), the most significant greenhouse gas. Deforestation for agriculture or urban development reduces the number of trees that can absorb CO₂, increasing atmospheric levels. Industrial processes and agricultural practices emit methane and nitrous oxide, which are more potent greenhouse gases than CO₂. Additionally, activities such as cement production release CO₂. Human-driven land-use changes, such as converting forests to farmland, further exacerbate the problem by disrupting natural carbon sinks. Overall, these activities increase the concentration of greenhouse gases in the atmosphere, leading to global warming and climate change.