In eutrophic lakes, which conditions are conducive to the growth of algae()
A. Increase in pH
B. Decrease in pH
C. Increase in dissolved oxygen
Decrease in dissolved oxygen
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The generation of dust-haze is the result of many factors, including()
A. The friction coefficient of the ground increases due to the large buildings in the city
B. The urban heat island effect makes it difficult for the pollutants to circulate and spread in a small range
C. The vertical inversion of the atmosphere makes the pollutants stay near the ground
D. The rapid development of industry increases the emission of particles
The main nitrogen-containing pollutant in the atmosphere is NOx, and two-thirds of the anthropogenic sources are from ____()
A. Emission of coal combustion from power plants
B. Emission from mobile sources such as automobiles
C. Fuel combustion in industrial production process
D. Incineration process of waste incineration plants
Among the following methods, the methods that can be used to extract different forms of heavy metals in soil include()
A. SPE solid phase extraction
BCR fractional extraction
C. Tessier continuous extraction method
D. ASE accelerated solvent extraction
The source apportionment model of atmosphere which can infer the proportion of different source types is()
A. Enrichment factor method
B. Chemical element balance method
C. Pollution load model
D. Environmental fluid dynamics model