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Hi all today’s era is very fast era and now every one is want to preserve their food in the refrigerator for a long time, because for the next time they want the same food without any more work but during food refrigerating normally bacteria are not died and they come to our body when we use this food, you are using the meat of the animals then its also harmful, lot of bacteria can come from the contact with meat or poultry during processing, they can contaminate the food. Edit and that food when we use it become poisonous and this is called food poisoning
and during cultivation. Fresh fruits and vegetables can be contaminated if they are washed or irrigated with water that is contaminated with animal manure or human sewage.
During food handling. Food can be contaminated when an infected person handles the food or if the food comes in contact with another contaminated product. For example, if you use the same cutting board for both chopping vegetables and preparing raw meat, you risk contaminating the vegetables.
Through the environment. Many harmful organisms are commonly found in dirt, dust, and water, including the bacteria clostridium botulinum and clostridium perfringens and the parasite cryptosporidium parvum. These organisms may find their way into the foods we eat. Environmental conditions like use the polluted water for the agriculture due to agricultural runoff may make this type of infection more.
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replied September 4th, 2008
There is a degree of poisoning that a human body can take excessive exposure to toxins and pollutants results into irreversible illnesses like the brain disorders, coma, and death.
Toxicology is a science that studies the relationship of a dose of toxic substance and its effect on the body.

This science considers that almost each substance is toxic under specific circumstances, even water is considered toxic, however, passive toxins do not have much effect on the body the way active toxins have, therefore these are considered more dangerous.

The most common way of poisoning other than air pollution is the food.

Not food directly but through the pesticides that are used in growing crops. Each year there is tremendous use of pesticides used to grow crops so that the human race can be properly fed through the crop that grows.
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