Question
Explain in brief : Biomagnification
✓
Answer
- Living organisms depend on each other for their food requirement and form a food chain.
- Through such food chain energy and nutrients move to upper trophic levels sequentially.
- If any non-biodegradable substance enters in biotic factor of an ecosystem, its concentration progressively increases at higher trophic level.
- The uncontrolled use of pesticides and other chemicals increases the amount of these chemicals in the soil or water bodies.
- From soil or water they enter in the body of plants and then in the bodies of herbivores and carnivores.
- As these chemicals are not degradable, they get accumulated progressively at each trophic level.
- This phenomenon is known as Biological magnification.
- As human beings occupy the top level in any food chain, the maximum concentration of pesticides gets accumulated in human body.
- Therefore, though for increase of crop production we use such chemicals; we need to control their use.
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