The problem of introduced species can potentially disrupt the balance of ecosystems.

Many native species live in this park.

I use koji starter to make homemade miso.

What is the specific epithet of this plant?

Let's go to the designated place.

My misgivings about his plan is that there's a possibility he might fail.

He has misgivings about the plan.

This species is on the brink of extinction.

That species is on the verge of extinction.

Mr. Yamahara is my best friend.