I understand that bacteria makes the food rotten (side note is this in all cases?) but how does the bacteria get there in the first place? It cant just show up in rotten food. Is it a part of the plant/animal it came from or is it a result of food processing? If it comes from plants/animals then does the bacteria harm the plant/animal it originally came from when it was alive? Is it produced by the original animal/plant or is it something the animal picks up in the environment?
In: Biology
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