Bio-accumulation or biological magnification

Hi,

Bio-nondegradable substances in water bodies accumulate in the bodies of organisms along the food chains. The top predators will end up with the highest levels and usually lethal concentrations of these poisonous chemicals.






Water pollution is disastrous for fauna and flora that live in rivers, lakes and ponds.

Lets respect the habitats of all fellow earthlings.
Cheers

Hi,

Minamata disease is caused by mercury poisoning. It occurred in Japan in 1952 to 1960.

In 1952, a company involved in making plastic products dumped its waste water into the Minamata River. Buy the time they were stopped in 1966, 400 tons of mercury was was dumped.

Minamata disease caused nerve problem and involuntary nervous twitches and loss of balance when walking. Severe birth defects was seen in children born to mothers who consumed tainted fish and other seafood from the region. Even small amounts bio-non degradable substances get concentrated into lethal concentrations due to bioaccumulation.



Cheers

Molecular Genetics, cell divisions, ecology, selection

Hi Students,

Below are a few links I found very useful in understanding concepts in Molecular Biology and genetics. Difficult concepts in cell division are also dealt with.

Ecology, bioaccumulation and bio-magnification are also dealt with in the powerpoints slideshows listed below.

(1) http://www.slideshare.net/msthomas79/genetics-3177596?from=share_email

(2) http://www.slideshare.net/orodina/nucleic-acids?from=share_email

(3) http://www.slideshare.net/chalkie28/gcse-inheritance-and-selection?from=share_email

(4) http://www.slideshare.net/boo5000/unit-1-ecology-powerpoint-goal-5?from=share_email

(5) http://www.slideshare.net/MrJewett/biomagnification-bioaccumulation2?from=share_email

(6) http://www.slideshare.net/walajtys/biology-chapter-13-genetic-engineering?from=share_email

(7) http://www.slideshare.net/maxedmond/dna-strucutre-and-replication?from=share_email

(8) http://www.slideshare.net/msthomas79/genetic-engineering-3177598?from=share_email

I will go through these slideshows in class. You may want to browse through them for better understanding.

Cheers