The document discusses global warming, providing information on its causes, effects, and ways to control it. It defines global warming as the rise in average temperature of the Earth's atmosphere and oceans. Some of the key causes mentioned are natural factors like forest fires and water vapor, as well as man-made issues including deforestation, industrialization, pollution, and greenhouse gas emissions. Major effects listed are rising sea levels, more heat waves, melting ice sheets, and changes to plant and animal habitats. The document recommends actions people can take to reduce global warming such as planting trees, using renewable energy, and reducing consumption.