Before revision: Symbiosis (Ancient Greek : living with, companionship , < : together; and bíōsis: living), , isp any type of a close and long-term biological interaction, between two biological organisms of different species.
After revision: Symbiosis (Ancient Greek : living with, companionship , < : together; and bíōsis: living), , is any type of a close and long-term biological interaction between two biological organisms of different species.