（6）First,the declining quality of fuel deposits and energy-conversion site to which society must now turn means more mat
（6）First,the declining quality of fuel deposits and energy-conversion site to which society must now turn means more material must be moved or precessed,bigger facilities must be constrcted and longer distances must be traversed.
首先,社会发展所依赖的燃料矿藏和加工地质量的下降,使得社会把方法转向为增加矿物的运输和加工、扩增更多的大型设备、延长运输的距离.
（7）Those of greatest concern are the risk of death or disease as a result of emissions or accidents at energy facilities and the impact of energy supplied on the global ecosystem and on international relations.
其中最引人关注的是由能源设施排放废弃物或发生事故所造成的死亡和疾病,以及由于能源供应对全球生态系统和国际关系所造成的影响.
6 这是并列复合句
First是状语,
the declining quality of fuel deposits and energy-conversion site是主语
to which society must now turn means more material 是定语
must be moved or precessed是谓语,
bigger facilities是主语must be constrcted 是谓语
and longer distances是主语 must be traversed是谓语.
（7）这是简单句 主系表结构
Those of greatest concern是主语
are是系动词
the risk of death or disease是表语
as a result of emissions or accidents at energy facilities and the impact of energy 是状语supplied on the global ecosystem and on international relations是过去分词短语作定语.首先非常感谢您的慷慨！第六个句子您的解析中提到的“ to which society must now turn means more material 是定语 ”我还是不太明白，to which 是什么结构，turn means怎么翻译呢呢？还有整个句型为什么做定语。。。希望能再解答一下，谢谢！to which society must now turn means more material 是定语从句 作定语
其中 to which是带介词的 关系代词 引导 定从并作定从中 的状语
which指的是 the declining quality of fuel deposits and energy-conversion site
定从 是 turn sth加 形容词 作宾补 句型
也就是society是定从中的主语
must now turn 是定从中的 谓语
means是定从中的宾语
more material是定从中的宾补
也就是to the declining quality of fuel deposits and energy-conversion site ，society must now turn means more material