Answer:
Mutualism- The doctrine that mutual dependence is necessary to social well-being.
Commensalism- An association between two organisms in which one benefits and the other derives neither benefit nor harm.
Parasitism- Where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life.
Symbiosis- Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, be it mutualistic, commensalistic, or parasitic.
