He is a very careful person.

The late autumn wind is rustling the leaves of the trees.

His words were profound.

He was so profound that it was difficult for us to understand his thoughts.

He is thought to be a greedy person.

His actions are said to be deeply sinful.

Microorganisms are one of the basic forms of life.

Protists are single-celled organisms that live in water.

I love biology.

I am majoring in biology at university.