The 20th century has seen dramatic changes in the way that humans use the landscapes of the world. People are now living in and affecting virtually every environment on earth. There will soon be few truly natural areas left. While it is crucial that we preserve the natural areas, an even more important issue for the 21st century will be to determine how people can live in harmony with the natural environment.
KeywordsSoil Erosion Paddy Field Vegetable Garden Water Management System Steep Mountain
Unable to display preview. Download preview PDF.