Symbiotic Relationships
Symbiosis refers to an intimate relationship between two organisms. This term does not indicate whether the relationship is beneficial or harmful to the organisms involved. Mutual symbiosis, or mutualism, occurs when both species gain some benefit from the relationship, whereas parasitism consists of a relationship in which one of the organisms benefits, while the other one is harmed. A third symbiotic relationship is that of commensalism. In commensalism, the relationship is beneficial to one of the organisms while the other neither benefits nor
is harmed. A commensal organism can be either obligate or facultative. The obligate commensal cannot survive without
its symbiotic partner. The facultative commensal can be found either living with its symbiotic partner or on its own.
| Post dates | Users | rates | Contents |
|---|---|---|---|
| 2016-01-05 | zanbaq | 50.00 | Check this speaking |
- Films can tell us a lot about the country where they were made. What have you learned about a country from watching its movies? Use specific examples and details to support your response. 70
- question 5 80
- question 6 70
- Some people believe that university students should be required to attend classes. Others believe that going to classes should be optional for students. Which point of view do you agree with? Use specific reasons and details to explain your answer 80
- Some people prefer to eat at food stands or restaurants. Other people prefer to prepare and eat food at home. Which do you prefer? Use specific reasons and examples to support your answer 90
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