Formate is an important compound in organic chemistry.

This rock is rich in silicate.

Citrate plays an important role in organic chemistry.

I learned about the properties of arsenate in chemistry class.

This fertilizer is rich in phosphates.

He finally achieved graduating from loner status.

There were water striders floating on the pond.

The hippopotamus is a very rare animal.

A whirligig beetle is swimming in the pond.

A water spider can walk on the surface of the water.