Hi, by term paper topics if you mean research topics, here is a list:

• What are the primary mechanisms within a host that mediate microbe–microbe and host–microbe interactions?
• What are the relative contributions of host-associated and environmental factors in determining host microbial community composition?
• How do microbial communities function to affect the phenotype of the host?
• Can compositional or evolutionary changes in microbiomes help hosts adapt to environmental change within the lifetime of the host?
• What is the role of the microbiota in host speciation processes?
• How can the associated microbiota be effectively included in risk assessments of invasive non-native species?
• How does the microbiome of captive animals affect the success of reintroduction programmes?
• How can a ‘systems biology’ approach improve our understanding of host–microbe interactions?