The document discusses global warming and its causes and consequences. It explains that global warming is the increase in air temperature around the world caused by greenhouse gases trapping heat from the sun. The main greenhouse gases are carbon dioxide, nitrous oxide, CFCs, and methane, which come from sources like burning fossil fuels, agriculture, and landfills. Consequences of global warming include changes in weather patterns, rising sea levels, impacts on plants and animals, and increased disease in humans.
