This area is rich in subterranean rivers, which serve as a source of groundwater.

Vitamin B6 is an important nutrient for maintaining a healthy nervous system.

He is facing many difficulties due to gender identity disorder.

This company demands uniformity in all projects.

This design has uniformity in color.

This cold is highly contagious, so please be careful with prevention.

Database transactions need to ensure their atomicity.

Flexibility is necessary for success.

This math problem is based on the principle of additivity.

This problem can be solved using the principle of linearity.