I know there are special bacterias or viruses that exist to feed on certain things, or give diseases to certain plants or animals. If I leave a banana in a room, how does the “banana” specialist bacteria end up finding it? Where was it before?
Bacteria does not “find” a target. Instead, you have so much bacteria just going everywhere that some inevitably finds some food it can live on. The bacteria that does not find food reproduces and makes more bacteria which goes out hoping to land on even more food.
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