Which of the following describe an interaction where an organism of one species benefits and an organism of a different species is harmed Select all that apply. commensal relationship mutualistic relationship parasitic relationship symbiotic relationship

In the context of interactions between different species, the following descriptions apply: 1. **Commensal relationship**: This is where one organism benefits while the other is neither helped nor harmed. Therefore, it does not fit the criteria. 2. **Mutualistic relationship**: In this interaction, both organisms benefit from the relationship. Thus, it does not fit the criteria. 3. **Parasitic relationship**: This is where one organism (the parasite) benefits at the expense of the other organism (the host), which is harmed. This fits the criteria. 4. **Symbiotic relationship**: This term generally refers to any close and long-term interaction between two different species, which can be mutualistic, commensal, or parasitic. Therefore, it does not specifically indicate that one organism is harmed. Based on this analysis, the correct answer is: - **Parasitic relationship**.