He understands the risk of being infected with semen that contains HIV.

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?

He devoted his life to the study of science.

He is majoring in the subject of science.

Animals of the Canidae family, such as wolves and foxes, have a wide variety of forms.

The Canidae family includes animals such as wolves, foxes, and dogs.

Plants of the Asteraceae family are often seen in gardens for their beauty and diversity.