I waved a glow stick at the concert.

He is living as a farmer.

Calcium is an important mineral that makes up human bones.

I saw a seagull flying at the beach.

Rhodium is a type of precious metal, very rare and valuable.

Osmium is the densest element on Earth.

Gallium is one of the elements on the periodic table.

Potassium is an important mineral for the human body.

In the old days, people were moved by the strength and beauty of the sea lion.

A sea lion is a type of marine animal, and it is very rare.