Question
Biology Question on Environmental Issues
dB is a standard abbreviation used for the quantitative expression of
A
A particular pollutant
B
The dominant Bacillus in a culture
C
A certain pesticide
D
The density of bacteria in a medium
Answer
A particular pollutant
Explanation
Solution
Unwanted sound is called noise and it is measured in terms of decibels (dB). Generally sound above 80 dB is noise.