In this forest, various organisms live by building a relationship of mutualism.

The menu of this restaurant is various, making it difficult to choose.

He is working hard to construct a new house.

The relationship between this seaweed and the clownfish is called commensalism.

In this forest, various organisms are living in symbiosis.

We should live our lives to the fullest.

The forest is quiet.

We have maintained a good relationship for a long time.

His research is deeply related to my project.

We had a picnic in the forest over the weekend.