Climate change is a significant and ongoing shift in Earth's climate patterns. It's primarily driven by human activities, such as the burning of fossil fuels (like coal, oil, and natural gas) which release greenhouse gases into the atmosphere. These gases, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), act like a blanket, trapping heat from the aun and causing the planet's average temperature to rise. This process is often referred to as "greenhouse effect"