Qualification > Sciences

plzz HELP NEEDED in Bio !

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IG4ever:
i have some questions
1- what are the dangers of the overuse of nitrogen fertilisers ?
2- what is the harmful effect of radiation on the human body cells?
3- whats is the harmful effect of nicotine,tar,tobacco,heroine?

IG4ever:
anyone...... :-\ :-\

Priceless:
hmmm

1) eutrophication (if u dnt no da process..temme ;))
2) can cause mutations in body cells
3) dey all lead 2 diff probs eg.tar leads 2 lung cancer

4 da 3rd q...i still hv 2 study those so dnt quite remb.......any1 else plz ans :)

if u need any more details....plz sk....all da best ;)

Triple_A:
Nicotine= narrow blood vessels, raise blood pressure
Tar= causes cancer
Heroin= damage respiratory system and may cause transfer of STD like  AIDS etc....

Tobacco contains nicotine and tar ;D

Hope ive helped!!

GOOD LUCK

IG4ever:
Thanks a lotz for u guys
good luck ;) ;)

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