All you have to do is rewrite you idea in your hypothesis.
A I think not really sure
The following are some of the reasons we preserve our food.
Not to lose it freshness
.To prevent contamination and infection
.To prevent food from smelling
.To keep insect and other pest away from the food.
Keeps farm produce in good condition for planting in the next season
.To keep food for a long period of time.
Liver
It causes liver infection can cause cirrhosis and liver cancer
