Competition:This is when two or more organisms vie for the same limited resources such as food, water, space or sunlight.
Mutualism:A type of interaction where both species benefit from their relationship.
Symbiosis:This refers to any long-term interaction between two different biological organisms. It could be mutualistic (both benefit), parasitic (one benefits at the expense of the other) or commensal (one benefits and the other is neither harmed nor helped).