|
海南翻譯公司關(guān)鍵字：, the relationship between biology and the natural environment
First, the natural environment to adapt to changes in biological two-way limits, in the biosphere, human activities change the extent of the existence of ecological limits. The trophic levels form a relatively stable long-term equilibrium, which can maintain a healthy ecological system of the ratio of the number and type of relationship, that is, human activities should not damage limits. Variety of organisms to adapt to changes in environmental factors also have a two-way limits, is its tolerance limits, there are upper and lower critical point, for example, in most organisms the optimum temperature between 10 ℃ -45 ℃. Organisms to water, air, sunlight, nutrients, etc. There are strict requirements for all hazardous substances have a certain tolerance limits. Humans should create the optimum environment for biological survival, avoid causing environmental degradation and to biological hazards.Second, the capacity of the natural environment has a relatively extreme environmental pollutant and its subsystems翻譯價格標準 have some self-purification capacity, has a certain capacity of the environment. Human and biological substances into the environment, a variety of roles through the environment back into a new material recycling. Many contaminants can be degraded in the environment, eliminate and harmless substances, all included in the ecology of recycling and not polluting. However, emissions of substances of modern society, in the aggregate and individual, the more self-purification capacity over the environment. Various physical, chemical and biological contamination even if diluted, spread, not to eliminate, but also a cumulative phenomenon. Pollution of the environment of each factor on its own capacity limits, namely, the existence of extreme self-purification capacity. More than this limit, it showed a decline in environmental quality.5, the economic relationship between development and ecological protection
|