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What do you understand by the term bio magnification?
 
a. Biomagnification is the  in contaminated substances due to the intoxicating environment.
 
b. It is the  of toxic substances in the food chain.
 
c. The contaminants can be  metals such as mercury, arsenic or pesticides like PCB and DDT.
 
d. These chemicals are released into the environment, which are ingested or absorbed by the higher organisms through their food.
 
e. The toxins get  in the higher organisms.