Climate change refers to long-term changes in temperature, precipitation, and other atmospheric conditions on Earth. It is primarily caused by human activities, such as burning fossil fuels and deforestation, which release greenhouse gases into the atmosphere and contribute to the warming of the planet. Climate change has far-reaching impacts on the environment, including rising sea levels, more frequent and severe natural disasters, and disruptions to ecosystems and wildlife. It is a major global challenge that requires urgent action to mitigate its effects and adapt to the changing climate.