问题详情

According to the author, there would not be starving elks, damaged meadows or dying forests in National Parks if ______.
A．the government introduced stricter wildlife laws.
B．the National Park Service employed more wildlife management techniques.
C．the natural processes were restored.
D．if we continued to improve our natural environment.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！