He occupies an important position in the company.

The atmosphere of this planet is harmful to humans.

Nitrogen makes up about 78% of the Earth's atmosphere.

He lived in Japan for about 10 years.

Earth is one of the planets in the solar system.

He is a person who keeps promises.

Air pollution is having a serious impact on the health of the planet.

He is dedicated to the study of the atmosphere.

The nitrogen cycle is very important for maintaining ecosystems on Earth.

Liquid nitrogen is very cold, so care must be taken when handling it.