environment topic

1. Biomagnification
MADE BY : ROHIT JAMAREEYA ROLL NO : 91600104005
: HIREN BARIYA : 91600104007
Chemicals in our Environment

2. Biomagnification
Definition:
Biomagnification, also known as bioamplification,
or biological magnification is the increase in
concentration of a substance, such as the pesticide
DDT, that occurs in a food chain

3. Biomagnification
When it’s happen
 Most often, biomagnification occurs in the higher
trophic levels of the food chain/web , where exposure to
chemicals takes place mostly through food consumption
rather than water uptake. Biomagnification is a specific
case of bioaccumulation and is different from
bioconcentration.

4. Biomagnification
Dicholoro-diphenyl-trichloroethane (DDT)
An insecticide used in the 40’s, 50’s and 60’s
entered the environment in run-off from land
DDT Was banned in 1972 after the Bald Eagle population
had a noticeable crash.

5. Biomagnification
Process of Biomagnification

6. Biomagnification
How to control Biomagnification?
 Do not put harmful substances (e.g., used motor oil) into
the water system or storm drains. ...
 Avoid toxic chemical pesticides.
 Eat certified organic foods when possible. ...
 Avoid fishing or spending time in contaminated areas.

7. Biomagnification

8. THANK YOU