<human>:  What is climate change?
<bot>: Climate change is a long-term shift in global weather patterns, including average temperature and precipitation, that is primarily caused by human activities, such as burning of fossil fuels, which release large amounts of greenhouse gases, like carbon dioxide and methane, into the atmosphere. The increased release of these gases traps heat within the atmosphere, creating an enhanced greenhouse effect and leading to global warming. This phenomenon has caused extreme weather events, disrupted food production, and decreased biodiversity around the world.