South America is located in the continent of America. It has a population of around 387 million people. The climate varies along its length, making generalizations difficult, but it has distinct wet and dry seasons. Some notable volcanoes in South America include Chaiten in Chile, Huila in Colombia, Santiago in Nicaragua, and Pichincha in Ecuador. Earthquakes also frequently affect the region, such as one in 2012 that was magnitude 7.1 and shook southwestern Colombia. Major rivers and mountains are found across South America, and the region contains large rainforests like the Amazon, which are threatened by activities like agriculture, cattle grazing, and logging.