Human activity plays a crucial role in climate change primarily through the emission of greenhouse gases from burning fossil fuels, deforestation, and industrial processes. These activities increase the concentration of gases like CO2 and methane in the atmosphere, trapping heat and leading to a rise in global temperatures. Additionally, urbanization and agriculture contribute to land-use changes that disrupt natural carbon sinks. Understanding human contributions to climate change is essential for developing strategies to mitigate its impacts and transition toward sustainable practices.