Such environmental factors result basically from increased rates of pollution and from the failure of some countries to respect their obligations under the Kyoto Agreement and other international agreements and conventions on the protection of the environment.
这种环境因素基本源于污染率的上升和一些国家未能遵守其根据《京都议定书》和关于环境保护的其他国际协议和公约所承担的义务。