<human>:  What are the causes of global warming?
<bot>: The most commonly accepted cause of global warming is the increasing emissions of greenhouse gases into the atmosphere. These gases trap heat and light from the sun, leading to an increase in the average temperature of the Earth's surface. Other causes of global warming include changes in land use, such as deforestation and urbanization; changes in the Earth's reflectivity resulting from pollution, desertification and other human activities; and natural causes, such as changes in solar activity and volcanic eruptions.