1. Roosting is two different organisms living together. One of them benefits, but the other neither benefits nor is harmed. This phenomenon is called cohabitation.

2. For example, in the ocean, the small remora uses its suction cups to attach to the body surface of large fish and is carried everywhere. It temporarily leaves the big fish when foraging, which is not beneficial to the big fish. It's not harmful, but it does increase the chances of the anatomy finding food.

3. Mutual benefit, two organisms living together, relying on each other and benefiting from each other, is called mutual benefit.

4. For example, a certain kind of sea anemone is attached to the shell of the conch, and its stings protect the conch. At the same time, the sea crabs living in the conch shell move from time to time, allowing the sea anemone to capture food. convenience.

5. Sexual habitat: Sexual habitat generally refers to favoring the survival of ***, which is also known as favorable habitat, which means that the interaction between species has no impact on one party. And it is beneficial to the other party (if it has no impact on one party but is harmful to the other party, it is called partial harm).

6. Together with mutual benefit and original collaboration, it belongs to "positive interaction".

7. The phenomenon of two organisms that can survive independently living together in a certain relationship.

8. In the relationship between two populations, one species benefits and the other species is not affected.

9. For example, algae growing on turtle shells benefit from the substrate provided by turtles.