Question

What is biological magnification? Explain this phenomenon taking siutable examples.

Answer 1

    The man-made wrongful process of harmful chemical substances and heavy metals getting mixed in big river bodies (lakes, rivers, canals and seas) and then move into the food chains of the ecosystems is called biological magnification. The result is that they get into the diet of aquatic organisms. Then these get into the bodies of higher level predators in the food chain.

 

   The increase in toxic materials in the organisms higher up in the food chain, due to their presence in the organisms in the lower levels is called biological magnification.

 

    Because of mixing of toxic chemical substances in water and Earth, the animals, birds, fish and humans who feed on these get infected. Their bodies build gradually materials harmful to their own health.

 

Reduce the effect of biomagnification or biological magnification by

1. preventing oily wastes from cooking, oil, grease, chemicals, dyes, wasted pills, medications, used sanitary napkins, cleaning agents, pesticides, herbicides, fertilizers  into the sewerage or drainage through sink in the kitchen or flushing through toilets.

2. Dispose of the garbage properly through the municipal disposal system.

3. Organic farming reduces the use of pesticides, herbicides and fertilizers.

Answer 2

$\huge\mathfrak\red{Answer :}$


$\huge\textbf{Biological Magnification :}$


When harmful chemicals enter in the food chain and gets concentrated at each tropic level then it is known as Biological Magnification or Biomagnification.

OR

The increase in concentration of harmful substances in the body of the living organism at each tropic level is known as Biological Magnification.
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$\huge\textbf{Where it is maximum ?}$


The levels of Biological Magnification different at different levels of the ecosystem. It will be maximize at highest tropic levels and minimum at lowest tropic levels.

Ex :- In Humans; Biological Magnification is the most or maximum.
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$\huge\textbf{Prevention :}$


→ Use pesticides, fertilizers etc. in lesser amount. If possible then don't use them.

→ Don't dump human waste, chemicals from factories etc. in water. As water is important for growing plants. Due to this we can prevent biological magnification entering in food chain.

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