保护和恢复自然环境的任务只是在最近几十年内才作为人类所面临的最重要问题之一而被提出,因为已经很难找到一个国家或地球上的一个角落不在不同程度上遭受由于自然界平衡的破坏而带来的不良后果。但是,在各类国家内,居住条件变坏的具体原因和表现也各不 The task of protecting and restoring the natural environment was only presented as one of the most important issues facing humankind in recent decades as it has been difficult to find a single country or a corner of the globe that is not to some degree affected by the balance of nature Bad consequences of destruction. However, the specific reasons and manifestations of deteriorating living conditions in all kinds of countries are also different