On what does the harmful effect of pollution depend on?
A. The concentration of pollutants and the organism
B. The concentration, duration of exposure to pollutants and the organism
C. The concentration of pollutants and duration of exposure
D. The organism only
Answer:B
On what does the harmful effect of pollution depend on?
A. The concentration of pollutants and the organism B. The concentration, duration of exposure to pollutants and the organism C. The concentration of pollutants and duration of exposure D. The organism only