The document discusses global warming and the greenhouse effect. It explains that global warming refers to rising earth surface temperatures due to an increase in greenhouse gases, which leads to an enhanced greenhouse effect. The greenhouse effect is a natural process that helps regulate the climate, but human activities like burning fossil fuels and deforestation are distorting this process and accelerating global warming by emitting more greenhouse gases like carbon dioxide, methane and nitrous oxide into the atmosphere. The effects of the rising temperatures caused by the unbalanced greenhouse gases include more severe storms, droughts, habitat damage and species extinction.