Chlorofluorocarbons or CFCs are a chemical compound containing carbon, chlorine, and fluorine. Throughout the 20th century, CFCs were mass produced for their popularity in refrigeration and spray cans. In the 1970s, evidence began to show the harmful effects of CFCs on Earth.
Originally created as Great Sand Dunes National Monument on March 17, 1932, Great Sand Dunes National Park and Preserve was established by an act of the United States Congress on September 13, 2004.
The answer: Japan. Located in the southwest region of HonshÅ« Island, the Tottori Sand Dunes are the largest in Japan. They were formed over a period of almost 100,000 years.The dunes create a desert-esque environment (the camels are imported) that offers unique views and activities for the adventurous, like paragliding and sandboarding.ocated in the southwest region of HonshÅ« Island, the Tottori Sand Dunes are the largest in Japan. They were formed over a period of almost 100,000 years.