1. Introduction
2. The concept of parasitism
3. Particular features of parasitism on the example of specific species
4. Examples of sharply negative effects on the host
5. Examples of paradoxically positive effects on the host
6. Conclusion
1. Introduction
2. The concept of parasitism
3. Particular features of parasitism on the example of specific species
4. Examples of sharply negative effects on the host
5. Examples of paradoxically positive effects on the host
6. Conclusion