parasitism symbiosis coexistence mutualism
I gave my students this multiple choice question: Carolina wrens and painted buntings are two bird species that live in overlapping territories. They have different requirements for food and nesting. Which term best describes the relationship between the two species?

Only one answer is correct among these 4 choices:
- parasitism
- symbiosis
- coexistence
- mutualism

Could you tell me which one is correct?

coexistence