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Bioaccumulation
Bioaccumulation is the process by which certain toxic substances (such as heavy metals or DDT) accumulate in an organism, often reaching harmful levels.
Biological Magnification
The method through which the levels of harmful compounds accumulate progressively in each subsequent level of the food chain.
Persistence
A characteristic of certain chemicals that are extremely stable and may take many years to be broken down into simpler forms by natural processes.
Nitrogen Cycle
A biogeochemical cycle that describes the transformations of nitrogen and nitrogen-containing compounds in nature, involving processes like fixation, nitrification, and denitrification.
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