تجربة علمية بالانجليزية

The Hypotheses
We can do that by a simple experience and by using that simple
Instruments
The experience
We close the head of the bottle by the cotton then we burn the
cigarette in the head of the bottle (WP the cotton), after that we press the
bottle in order to burn the cigarette; here we observe that the cotton
is colored by yellow that substance is called «Nicotine».

The Final Results
1- When we burn one cigarette ; cotton’s color changes to yellow .
2- The cigarettes are very dangerous for mankind ‘s health because it contain poison «Nicotine».