- Avoiding predators has a positive impact on the organism
- Cactus wrens build their nests in cholla cacti to avoid predators
- Therefore, cactus wrens building their nests in cholla cacti has a positive impact on themselves

- Cactus wrens building their nests in cholla cacti has a positive impact on themselves
- Commensalism is a relationship between two organisms in which one benefits while not harming the other one
- Cactus wrens building nests in cholla cacti does not harm the cholla cacti
- Therefore, the relationship between cactus wrens and cholla cacti is commensalism

So, the relationship between cactus wrens and cholla cacti is commensalism
[Question]In a desert environment, cactus wrens often build their nests in cholla cacti to avoid predators. This behavior does not hurt the cacti. Which type of relationship do cactus wrens and cholla cacti demonstrate?
[Context]- Avoiding predators has a positive impact on the organism 
- Commensalism is a relationship between two organisms in which one benefits while not harming the other one 
- Cactus wrens building nests in cholla cacti does not harm the cholla cacti 
- Cactus wrens build their nests in cholla cacti to avoid predators