Copernicium is one of the elements on the periodic table.

In physics, light and sound propagate as transverse waves.

He fell into self-loathing.

I saw a beautiful butterfly in the park.

When spring comes, I go to the mountains to dig bamboo shoots.

The golden spider is a type of spider often seen in rice fields and fields in Japan.

The Paleozoic was a very important period in the history of the Earth.

The Paleogene period was a very important time in the history of the Earth.

Mark is one of the authors of the New Testament.

In this chemical experiment, we will try to extract coptisine.