Which of the following statements is the most efficient method of microbial biodegradation?
A.
Bacterial species and strains are mixed.
B.
Biopolymers, such as polysaccharides, polyesters and polyamides are mixed.
C.
Each species of bacteri um is used to degrade one type of contaminant.
D.
Each species of bacterium is used to degrade more types of contaminants.