Please use the emergency stairs in case of a fire.

Due to the earthquake, the city declared a state of emergency.

This problem can be solved using the principle of linearity.

Roundworms are an important part of the soil and contribute greatly to the health and fertility of the soil.

This new car is characterized by its streamlined design.

This piece of art has perfect symmetry.

This flower shows perfect bilateral symmetry.

He is good at solving algebra problems.

He is good at solving algebraic equations.

Boolean algebra is the foundation of logic and computer science.