The troposphere is the lowest part of the Earth's atmosphere, and most of the weather occurs here.

This is the most beautiful flower.

The troposphere is a part of the Earth's atmosphere, extending from the surface to about 10 kilometers.

The ceiling of this room is low.

It's difficult to solve a part of this problem.

This table is low.

The atmosphere of this planet is harmful to humans.

The weather today is very good.

It is difficult to predict the occurrence of earthquakes.

When the earthquake occurred, we evacuated immediately.