The cortex of his brain is highly developed.

Ohishiba is one of the common weeds seen in Japanese gardens and fields.

He is a diligent student.

He was solving the exam questions without looking away.

We will use arsenic in this chemical experiment.

There are a lot of arrowheads growing in this pond.

Her ring was shining with a diamond in the shape of a rhombus.

There are a lot of water caltrops growing in this pond.

As I walked through the haze, I could see nothing.

Arsenic is one of the elements widely distributed in nature.