Sagot :
Answer:
1. Commensalism
2. Rat
3. D
Explanation:
competition- occurs when members of more than one species compete for the same resource.
mutualism- A mutualistic relationship is when two organisms of different species "work together," each benefiting from the relationship.
parasitism- Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.