Two is an existence crisis that brings from the ecosystem environment depravation but put forward of.
二是从生态环境恶化带来的生存危机而提出的。
During this period, the destruction of the vegetation in Wenyu drainage area leads to the ecology environment depravation of the area.
这一历史时期，文峪河上游植被的破坏，直接导致了流域生态环境恶化。
It will empoison environment and foods to harm human health like as acute toxicosis, chronic toxicosis, and so on. it also can depravation environment and affect environment balance.
对环境和食品造成污染，引起对人类健康的危害，如：急性中毒，慢性中毒以及致癌，致畸，致突变等，并可以恶化环境，影响生态平衡。
It will empoison environment and foods to harm human health like as acute toxicosis, chronic toxicosis, and so on. it also can depravation environment and affect environment balance.
对环境和食品造成污染，引起对人类健康的危害，如：急性中毒，慢性中毒以及致癌，致畸，致突变等，并可以恶化环境，影响生态平衡。
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