Based on archaeological surveys of Neolithic cultural development and GIS spatial analysis,this study reproduced the main characteristics of temporal distribution and settlement selection of the sites
Heavy metals,one of the most toxic classes of pollutants,are resistant to degradation and harmful to the biological environment.The lakes that have developed on
The Queen is the only person in Britain who can drive without a license. Because the license is issued in the Queen’s name, it would be unnecessary for her to give herself a license. And she also does