但是 我讀的是IB學校 必須全英文報告
所以 如果可以的話 能給我參考解答嗎??(P.S.能英文就英文 如果不行 用中文也可以 我會自己想辦法翻譯的˙ ˙")
- 匿名使用者7 年前最佳解答
Water pollution refers to any substance into the water, resulting in changes in the ecological environment of water state. Water Pollution Prevention Law of the People's Republic of China, promulgated in 1984, for "water pollution" under a clear definition of water bodies due to the intervention of a substance, which led to the change of its chemical, physical, biological or radioactive characteristics, thereby affecting the efficient use of water, a phenomenon known as the water Pollution harm to human health or the destruction of the ecological environment, resulting in deterioration of water quality.
Water bodies in the natural state, there is a certain air dissolved into the water, is supported by the main source of water biological respiration, wherein the most important index of dissolved oxygen (DO), the foreign substance into the water, which may be decomposed by microorganisms, is dissolved oxygen in the oxide , must consume dissolved oxygen, which is called the self-purification capacity of the water, if too many foreign substances, dissolved oxygen is completely consumed, is more than the self-purification capacity of water bodies, aquatic organisms die of suffocation from lack of oxygen, or poisoning , which is polluted state.
2012-10-08 19:12:11 補充：