Man has a ______ _____ with nature in the same way we do with our family members.
查看答案
Man is not only a ______ in nature but also a ______ of nature.
Human beings' dependence on nature becomes more and more ______.
At the same time, we depend more than ever before on nature for its _____________________.
The ecological crisis is a ______ problem which requires ________ among different nations.