NEET BIOLOGY

Detailed explanation-1: -Chemicals such as PCBs, DDT, dioxins, and mercury are all persistent chemicals. Because they don’t break down and go away, these chemicals are a problem when it comes to fish that we eat. Especially when you consider that these chemicals can also bioaccumulate, or build up, in fish, wild game, and your body, too.

Detailed explanation-2: -This is biomagnification, and it means that higher-level predators-fish, birds, and marine mammals-build up greater and more dangerous amounts of toxic materials than animals lower on the food chain.

Detailed explanation-3: -The extent of bioaccumulation depends on the concentration of a chemical in the environment, the amount of chemical coming into an organism from the diet, water, or air, and the time it takes for the organism to acquire the chemical and then excrete, store, and/or degrade it.

Detailed explanation-4: -Bioaccumulation Causes One way is by an amount of the chemical coming into the living organism faster than the organism can break it down and use it. This means that more is going in than is coming out, therefore causing the chemical to accumulate in the organism.