We encounter microorganisms everyday through the food we eat water we drink and the air we breathe but we don't get disease always give reason
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Not every bacteria are harmful some of them are useful to digest the food of our body.
disease caused bacteria are different which are found in nature in small amount.
disease caused bacteria are different which are found in nature in small amount.
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It is true that we encounter microorganisms through the food we eat,the water we drink and the air we breathe but do not always get disease because not all these micro organisms are harmful to the body.
The body also has a defence mechanism towards those that are harmful. The immune system consisting white blood cells fights of disease causing pathogens
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