【简答题】is the most important
parameter in water pollution control , used as a measure of organic pollution and as a basis
for estimating the oxygen needed for biological processesA. TOC B. COD C. BOD D. VSS
【单选题】The fishing ban is regarded as a key move to stop the _____of biological resources and degradation of biodiversity in the Yangtze River, which has been damaged by overfishing and pollution.
【简答题】Air pollution occurs when harmful or excessive including gases, particles, and biological molecules are introduced into the Earth's atmosphere.(quantities of substances / quantities of smog)
【简答题】Biological pollution refers to the origin of pollutants from living organisms, including 、 、 , as well as pollution caused by human beings themselves and their life activities