Portability. Here is the ease with which the software might be transferred from one place to another. In simple text, This is a link amongst two organisms. you can find 3 diverse sorts of symbiotic associations: https://www.bing.com/maps?osid=ff1f54cd-8977-4a6f-846a-3b27f56a92e7&cp=-33.835934~150.957577&lvl=16&pi=0&imgid=b44a2691-fcbc-4efd-97be-fd7ec90e7d67&v=2&sV=2&form=S00027